Which of the following functions is not a sinusoid?

A) 2cos(2x),

B) 3sin(2x),

C) 3sin(2x)+2cos(2x),

D) 3sin(3x)+2cos(2x),

E) sin(3x+3)+cos(3x+2).

Which of the following functions is not a sinusoid?

A) 2cos(2x),

B) 3sin(2x),

C) 3sin(2x)+2cos(2x),

D) 3sin(3x)+2cos(2x),

E) sin(3x+3)+cos(3x+2).