A tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two pea plants. Punnett square showing female parent across the top with a phenotype of tall and a genotype of Tt and a male parent across the side with a phenotype of short and a genotype of tt. Inside the top left box 1 is written, inside the top right box 2 is written, inside the bottom left box 3 is written, inside the bottom right box 4 is written.

Which of the following shows the correct match of the box numbers and the genotype of the offspring? (3 points)

a
1 = Tt; 2 = tt; 3 = Tt; 4 = tt

b
1 = Tt; 2 = Tt; 3 = Tt; 4 = Tt

c
1 = Tt; 2 = Tt; 3 = tt; 4 = tt

d
1 = Tt; 2 = tt; 3 = tt; 4 = tt