Which sentence shows the CORRECT subject-verb agreement?
A.
The house, which sat high between the two hills, display large windows.
B.
The courier, who delivered my package that fateful day, ask me how I was doing.
C.
The boxer, stung by his opponent's blows, went down for the count.
D.
Carrot juice, a concoction favored by many, have never been a favorite of mine.