Find the period P, amplitude A, and phase shift S, and graph at least two periods of the equation.y = 4 sin (3x + 60°)
A. P = 90°, A = 3, S = 15°
B. P = 90°, A = 3, S = -15°
C. P = 120°, A = 4, S = 20°
D. P = 90°, A = 3, S = 15°
E. P = 
, A = 4, S = -20°
Answer: C
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