Find the correct number of statement(s) w.r.t. test cross.
a. It is cross between dominant unknown genotype and recessive parent.
b. It is cross between the progeny of F1 generation and recessive parent.
c. To determine the genotype of a tall pea plant at F2 generation.
d. To find out the genotype of dwarf pea plant in F2 generation.
Test cross is done to determine the genotype of dominant trait plants formed in hybridisation experiments