Correct the following text by inserting one comma. We ...

[ Grammar ]

Correct the following text by inserting one comma.

We could add a solar heating system to the greenhouse or we could build a rainwater collection system for the same cost.

A. Place a comma after the word “could.”

B. Place a comma after the word “or.”

C. Place a comma after the word “greenhouse.”

D. Place a comma after the word “system.”

Select your answer:

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