Designer A produces 1 cover design every 3 days, and Designer B produces 3 cover designs every 10 days. Which of the following statements is true about Designers A and B?

A Designer A has a higher design production rate than Designer B.
B Designer B has a higher design production rate than Designer A.
C Designer A and Designer B have the same design production rate.
D The production rates of Designer Aland Designer B cannot be determined.