PRF192_-_RE_-_SU_2023_575.webp

(Choose 1 answer)
What will be the output of the following program?
#include<stdio.h>
#include<ctype.h>
int main()
{
char ch = 'B';
if(islower(ch+1))
putchar(toupper(ch+1));
putchar(tolower(ch-1));
else
return 0;
}
A. B
B. c
C. A
D. a

Exit 19