问题

It’s smoggy these days. That’s terrible!—– Yes, I hope to plant trees.________ trees, ______air pollution.
A:The more; the fewer
B:the less; the more
C:The less; the fewer
D:The more; the less;
B:the less; the more
C:The less; the fewer
D:The more; the less;
正确答案是: