Tom's parents are away for 2 days. So he goes shopping in the supermarket. He makes a shopping list. There are lots of people in the supermarket. He plans  to make sandwiches for his lunch. He buys bread and butter. Then he buys ham and cabbages. He also buys two kilos  of apples. They are 5 yuan a kilo. The apples look good. He has everything on his shopping list. Then he goes home. , How much are the apples?
5 yuan. 2 yuan. 8 yuan. 10 yuan.