Context: In a group of cats, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele for long fur (f) is recessive to the allele for short fur (F).
This Punnett square shows a cross between two cats.
What is the probability that a cat produced by this cross will be heterozygous for the fur length gene?
A. 3/4
B. 0/4
C. 1/4
D. 4/4
E. 2/4
Identify the correct choice from the options below and respond with the letter of the correct option.

D