A graph of a trigonometric function is shown on a coordinate plane. Each branch of the graph begins at positive infinity, passes through the x-axis, and decreases to negative infinity. There are vertical asymptotes at equal intervals. Use the graph to answer the question.
Which of the following can be the parent function of the graph? Select all that apply.
A. sin x
B. cos x
C. tan x
D. cot x
E. sec x
F. csc x