Question: Graph the function over a two-period interval. Give the period and amplitude. y = 7 cos 4x The amplitude is (Simplify your answer.) The period

Graph the function over a two-period interval. Give the period and amplitude. y = 7 cos 4x The amplitude is (Simplify your answer.) The period is (Simplify your answer. Type an exact answer using x as needed. Use integers or fractions for any numbers in the expression.) Choose the correct graph below. O A. OB. OC. O D. Ay X X
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