Last month, a sporting goods store sold a total of 100 T-shirts and running shorts. The number of T-shirts sold was 10 more than twice the number of running shorts sold. How many T-shirts and running shorts did the store sell separately? A.
T-shirts: 30, Running shorts: 70

B.
T-shirts: 45, Running shorts: 55

C.
T-shirts: 55, Running shorts: 45

D.
T-shirts: 70, Running shorts: 30