Context: This passage describes the wing type trait in fruit flies:
Some scientists breed fruit flies to learn how traits are inherited. These scientists often use flies with vestigial wings, which are shorter and stubbier than normal wings. Fruit flies with vestigial wings cannot fly, so they are easier for scientists to handle and study.
In a group of fruit flies, some individuals have normal wings and others have vestigial wings. In this group, the gene for the wing type trait has two alleles. The allele for normal wings (N) is dominant over the allele for vestigial wings (n).
This Punnett square shows a cross between two fruit flies.
What is the expected ratio of offspring with normal wings to offspring with vestigial wings? Choose the most likely ratio.
A. 3:1
B. 0:4
C. 2:2
D. 4:0
E. 1:3
From the given choices, select the correct answer and reply with the letter of the chosen option.

B