What is the output of this program?

#include<stdio.h>
#include<string.h>
 
int main()
{
    int fd[2];
    int count;
    char buffer[6];
    if( pipe(fd) != 0)
        perror("pipe");
    memset(buffer,'\0',6);
    count=write(fd[1],"Linux",6);
    read(fd[0],buffer,6);
    printf("%s\n",buffer);
    return 0;put
}

A. this program will print the string "Linux"

B. this program will print nothing because the buffer is empty

C. segmentation fault

D. none of the mentioned

Answer: Option A