How many of the following does not return a value?mysql_close(), mysql_init, mysql_real_connect

How many of the following does not return a value?mysql_close(), mysql

1.	How many of the following does not return a value?mysql_close(), mysql_init, mysql_real_connect
A.	3
B.	2
C.	1
D.	0
E.	None of these
Answer» D. 0