What will be the output of the following C++ code in text file?

#include <stdio.h>
int main ()
{
    FILE * p;
    char buffer[] = { 'x' , 'y' , 'z' };
    p = fopen ( "myfile.txt" , "wb" );
    fwrite (buffer , 1 , sizeof(buffer) , p );
    fclose (p);
    return 0;
}

A. Size of a data type in bits B. Size of a data type in bytes C. Size of a variable in bytes D. Size of a variable in bits

A. Char B. Float C. String D. Double

A. To declare a variable with dynamic storage duration B. To declare a constant C. To declare a variable with external linkage D. To declare a variable with static storage duration

A. None of the above B. They both have the same effect C. '++i' increments the value of 'i' before returning it, while 'i++' increments the value of 'i' after returning it D. '++i' increments the value of 'i' after returning it, while 'i++' increments the value of 'i' before returning it