What are the period and amplitude of the function y=2sin4 theta?

Question

A. pi/2 and 2
B. pi and 4
C. pi/2 and 4
D. pi/2 and 1

I think the answer is A. Am i correct?

Answer 1

amplitude is 2
when theta = pi/2 we have sin 2 pi
so period is pi/2
A.