Carhartt Women's Cross-Flex Women's Utility Scrub Pant

I am purchasing a medium and a large. According to size chart I am a large, but after reading reviews, some say medium. What is the exchange policy?

What is the inseam on the regular and the inseam on the tall? These look short in the picture.

I have these scrubs in all colors and the black bottoms are extremely small why is this ?

What is the inseam measurement on a size large?