Context: In a group of guppies, some individuals have a spotted tail and others have an unspotted tail. In this group, the gene for the tail spots trait has two alleles. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i).
This Punnett square shows a cross between two guppies.
What is the expected ratio of offspring with an unspotted tail to offspring with a spotted tail? Choose the most likely ratio.
A. 4:0
B. 0:4
C. 1:3
D. 3:1
E. 2:2
Select the correct answer from the provided options and reply with the letter associated with it.

B