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