They are...回答复数物品 — 英语选择题

在菜园里，近处有一个西红柿，远处有三个西红柿。Tom 问：What's that? Lily 应回答：____；接着 Tom 又指着远处问：What are those? Lily 应回答：____。哪组回答完全正确？A. It's a tomato. / They are tomatoes. B. They are tomatoes. / It's a tomato. C. It's tomatoes. / They are tomato. D. That is a tomato. / Those are tomato.