A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the `F_(1)` plant were selfed the resulting genotypeswere in the ratio of
A. 3:1-dwarf: tall
B. 1:2:1- tall homozygous : tall heterozygous : dwarf
C. 1:2:1- heterozygous : tall homozygous : dwarf
D. 3:1-tall : dwarf
