Select the correct answer. Consider functions p and q.

p(x)=log2(x-1)
q(x)=2^x-1

Which statement is true about these functions?

A.
The x-intercept of function p is greater than the x-intercept of function q.
B.
The x-intercept of function p is less than the x-intercept of function q.
C.
The x-intercepts cannot be compared because either p or q does not have an x-intercept.
D.
The x-intercept of function p is the same as the x-intercept of function q.