Anais placed 100 slips of paper, all equally sized and shaped, into a bag. Each slip was colored either red, blue, green, or orange. The red slips were numbered 1-25, the blue slips were numbered 26-40, the green slips were numbered 41-75, and the orange slips were numbered 76-100.

What is the probability that Anais pulls out a blue slip of paper?

A. 1/4
B. 3/20
C. 7/20
D. 2/5