Context: This passage describes the xeroderma pigmentosum trait in humans:
Xeroderma pigmentosum is a condition that causes skin to be easily damaged by sunlight. Humans with xeroderma pigmentosum avoid exposure to sunlight by wearing protective clothing, using sunscreen, and not going outside during the day.
In a group of humans, some individuals have xeroderma pigmentosum and others do not. In this group, the gene for the xeroderma pigmentosum trait has two alleles. The allele for not having xeroderma pigmentosum (E) is dominant over the allele for having xeroderma pigmentosum (e).
This Punnett square shows a cross between two humans.
What is the probability that a human produced by this cross will be homozygous recessive for the xeroderma pigmentosum gene?
A. 3/4
B. 2/4
C. 4/4
D. 0/4
E. 1/4
From the given choices, choose the correct answer and respond with the letter of that choice.

B