The Formula bar displays immediately under the column letters

The hard disk ________ sends a signal to the drive when information stored on the hard drive has been requested

Fill in the blank(s) with correct word

Assuming that string1 = "hello" and string2 = "hello world", which of the following returns 0?

a. strcmp(string1, string2);. b. strcmp(string1, string2, 6);. c. Strncmp(string1, string2, 5);. d. strncmp(string1, string2, 6);.