What is the output of the following code?

#include<stdio.h>
#include<string.h>
int count_bool_parenthesization(char *sym, char *op)
{
     int str_len = strlen(sym);
     int True[str_len][str_len],False[str_len][str_len];
     int row,col,length,l;
     for(row = 0, col = 0; row < str_len; row++,col++)
     {
         if(sym[row] == 'T')
         {
             True[row][col] = 1;
             False[row][col] = 0;
         }
         else
         {
             True[row][col] = 0;
             False[row][col] = 1;
         }
     }
     for(length = 1; length < str_len; length++)
     {
         for(row = 0, col = length; col < str_len; col++, row++)
         {
             True[row][col] = 0;
             False[row][col] = 0;
             for(l = 0; l < length; l++)
             {
                 int pos = row + l;
                 int t_row_pos = True[row][pos] + False[row][pos];
                 int t_pos_col = True[pos+1][col] + False[pos+1][col];
                 if(op[pos] == '|')
                 {
                     False[row][col] += False[row][pos] * False[pos+1][col];
                     True[row][col] += t_row_pos * t_pos_col - False[row][pos] * False[pos+1][col];
                 }
                 if(op[pos] == '&')
                 {
                     True[row][col] += True[row][pos] * True[pos+1][col];
                     False[row][col] += t_row_pos * t_pos_col - True[row][pos] * True[pos+1][col];
                 }
                 if(op[pos] == '^')
                 {
                     True[row][col] += True[row][pos] * False[pos+1][col] 
                                       + False[row][pos] * True[pos + 1][col];
                     False[row][col] += True[row][pos] * True[pos+1][col] 
                                       + False[row][pos] * False[pos+1][col];
                 }
             }
         }
     }
     return True[0][str_len-1];
}
int main()
{
     char sym[] = "TTTT";
     char op[] = "|^^";
     int ans = count_bool_parenthesization(sym,op);
     printf("%d",ans);
     return 0;
}

A. 1

B. 2

C. 3

D. 4

Answer: Option D