Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?
A
Determine whether –(x3 + 5x + 1) is equivalent to x3 + 5x + 1.B
Determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.C
Determine whether –x3 + 5x + 1 is equivalent to –(x3 + 5x + 1).D
Determine whether (–x)3 + 5(–x) + 1 is equivalent to –(x3 + 5x + 1).