Which sentence is punctuated correctly? (1 point)
• In 2019 eight new students enrolled in our school, but only five of them stayed.
• For about 3 minutes, the helicopter hovered overhead, and then flew away, to the east.
• After driving all day and night, we finally reached our destination, and we happily went to sleep.
• On Monday I am going to go hiking but after that I will come by to visit you.