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.