Context: This passage describes the Thomsen disease trait in humans:

In a group of humans, some individuals have Thomsen disease and others do not. In this group, the gene for the Thomsen disease trait has two alleles. The allele M is for having Thomsen disease, and the allele m is for not having Thomsen disease.
Audrey, a human from this group, has Thomsen disease. Audrey has two alleles for having Thomsen disease.
Based on this information, what is Audrey's genotype for the Thomsen disease gene?
A. having Thomsen disease
B. MM
Identify the correct option from the choices provided and respond with the letter of the correct option.

B