Which of the following statements are correct about the program below? #include<stdio.h> int main() { char str[20], *s; printf("Enter a string n"); scanf("%s", str); s=str; while(*s != ' 0') { if(*s >= 97 && *s &lt= 122) *s = *s-32; s++; } printf("%s",str); return 0; }

• A. The code converts a string in to an integer
• B. The code converts lower case character to upper case
• C. The code converts upper case character to lower case
• D. Error in code