Which sentence is correct? （ ）

A、Group brainstorming isn’t one way of coming up with ideas because more heads can come up with more ideas than just one head thinking.
B、Group brainstorming isn’t one way of coming up with ideas because more heads can’t come up with more ideas than just one head thinking.
C、Group brainstorming are one way of coming up with ideas because more heads can have come up with more ideas than just one head thinking.
D、Group brainstorming is one way of coming up with ideas because more heads can come up with more ideas than just one head thinking.