A plain brown female pigeon laid five eggs. The young turned out to be: 2 plain red, 2 checkered red, and 1 checkered brown. Describe the father pigeon. Give genotypes of all birds in this cross. Could any other types of offspring have been produced by this pair?

A) The father pigeon must be checkered red.
B) The father pigeon must be plain red.
C) The father pigeon must be checkered brown.
D) The father pigeon must be plain brown.