Select the number that can replace the question mark (?) in the following series.16, 17, 21, 30, 46, ?

Select the number that can replace the question mark (?) in the follow

1.	Select the number that can replace the question mark (?) in the following series.16, 17, 21, 30, 46, ?
A.	81
B.	63
C.	77
D.	71
E.	None
Answer» E. None