Which sentence correctly uses apostrophe to show possession and to form contractions?

Question

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1 point
We didnt get a chance to play games this weekend, to my son's disappointment.
We didnt get a chance to play games this weekend, to my sons disappointment.
We didn't get a chance to play games this weekend, to my son's disappointment.
We didn't get a chance to play games this weekend, to my sons disappointment.

Answer 1

We didn't get a chance to play games this weekend, to my son's disappointment.