Select all the statements that describe a unit rate. You must select all of the correct ones to receive credit. a

Pete sold 1 poster.
b

Michael drives 50 miles in 1 hour.
c

Karen paid $10 for each pizza.
d

Jared bought 4 shirts and 1 hat.
e

Elizabeth earned 5 points for every correct test question.
f

Kelly climbed 50 stairs.