Which of the following functions retrieve the entire contents of a file in such a way that it can be used as part of an expression?
1. file_get_contents()
2. fgets()
3. fopen()
4. file()
5. readfile()

A. Option 2 and 4

B. Option 1 and 5

C. Option 1 and 4

D. Option 3 and 4

Answer: Option C