The merchandise on display in the shop window ______ not for sa

The merchandise on display in the shop window ______ not for sale.
A、/
B、 is
C、 are
D、 being
【正确答案】:B
【题目解析】:该题考查的是集合名词的用法。merchandise是集合名词,表示商品,货物,做主语时谓语动词为单数。