The code shown below is compiled and executed, which part of the process will hold the character array buf?

a. text

b. data

c. heap

d. stack

e. BSS

long sum = 0; void do_work (int); int main(int argc, char **argv) { struct tms t; int n = 100000; do_work(n); times (&t); printf("system time: %ju ticks ", (uintmax_t) t.tms_stime); return 0; } void do_work(int n) { long i; int fd; char buf[1024]; for (i = 1; i