Answer: A
M17.0 is the correct ICD-10 code here because it is used to specify bilateral primary osteoarthritis of the knee which is seen in Mrs. Amanda.
Option B is not correct because M17.11 is used to specify unilateral primary osteoarthritis in the right knee which is not the diagnosis here.
Option C is not correct because M17.12 is used to specify unilateral primary osteoarthritis in the left knee which is not the diagnosis here.
Option D is not correct because M17.9 is used to specify unspecified osteoarthritis of the knee which is not the diagnosis here.