I was trying to help my sister study for the SATs and I came across two problems that i didn't know how to do. Here they are:

Consider a positive odd integer n. Let X = twice the number of factors of n, and let Y = the number of factors of 2n. Which of the following must be true?

A)X = 4

B)X > Y

C)Y > X

D)X = Y

E)There is not enough information to solve the problem

Let the expectal(x) be defined for all x as the smallest prime number that is greater than x/2. What is the value of:

expectal(8.1)expectal(5.2)

Thanks in advance!!