Which sentence uses dashes correctly?
A.
We had one thing in mind: swimming—in the ocean.
B.
The phone—just kept ringing and ringing all afternoon.
C.
The music teacher gave him a choice of horns—for example, the trumpet, the tuba, or the saxophone.
D.
A red chair sat in front of—the fireplace.
A.
We had one thing in mind: swimming—in the ocean.
B.
The phone—just kept ringing and ringing all afternoon.
C.
The music teacher gave him a choice of horns—for example, the trumpet, the tuba, or the saxophone.
D.
A red chair sat in front of—the fireplace.