Betsy spends her entire allowance one month. She spends 1/2 on new clothes, 1/5 on food, 1/5 on movies, and 1/10 on music. How much more does she spend on clothes than she does on movies?

A) 1/5 of her allowance C) 3/10 of her allowance

B) 1/2 of her allowance D) 1/10 of her allowance