What is$/$are purpose$/$s of the $$return $0$;$$ statement at the end of the main function.

a$)$ It signifies that the program ended with an error.

b$)$ It signifies that the program ended successfully.

c$)$ It tells the compiler to return to the beginning of the program.

d$)$ It signifies that the program ended without a return value.

e$)$ It$$s used to return a value from a non$-$void function