commodity store has four kinds of commodities with prices of 0.35 yuan, 0.25 yuan, 0.15 yuan and 0.10 yuan each. A has RMB 2.70 and B has RMB 1.50. They both want to buy the same product, and they require the least quantity and no money left. Which specification should they buy?
某商品店有每件标价0.35元、0.25元、0.15元和0.10元的四种价格的商品．甲有人民币2.70元，乙有人民币1.50元，两人要购买其中相同的一种商品，要求买的数量最少且无剩余的钱，应该买哪一种规格的商品？
<result>0.15</result>