Which sentence correctly uses a signal phrase to embed a quotation?
Select one:

“There’s one side of the moon that we never see.” Astronomer Steve Molden reminds us.

Astronomer Steve Molden reminds us “there’s one side of the moon that we never see.”

Astronomer Steve Molden reminds us, “There’s one side of the moon that we never see.”

“There’s one side of the moon,” astronomer Steve Molden reminds us, “That we never see.”