One parent is 6 feet tall and the other parent is 6 feet 4 inches tall.

What is the best prediction for the height of the offspring of the two parents?
A.
The offspring will be about 6 feet tall, but the exact height cannot be predicted.
B.
The offspring will be exactly 6 feet 2 inches tall because it is in-between the two heights.
C.
The offspring could be any height because the height of the parents is not important.
D.
The offspring will be either exactly 6 feet tall or exactly 6 feet 4 inches tall.