The following sentence may be missing one or more commas to set off parts of addresses, place names, or dates. Select the answer option that makes each sentence correct. If the original sentence is correct, select No change.

Delaware, the first state, gained statehood on December $71787$ and was followed a few days later by Pennsylvania.

No change

Put a comma between $7$ and $1787.$

Put commas between $7$ and $1787$ and after $1787.$