You will see this product made in this factory--- wherever y

You will see this product made in this factory___ wherever you go.A.to be advertised B.advertised
为什么答案不是B?to be 在什么情况下可省,在什么情况下不能省?请详细说明,
有人选择A，有人选择B,到底哪一个才是正确答案呀？请翻译并详细说明？