A Sick Child May Have Influenza or RSV

A sick child may have influenza or RSV. These virus infections have different treatment options, so the physician requests antibody titer tests. The results are as follows: anti- influenza antibodies are primarily IgM, and anti- RSV antibodies are all IgA and IgG. Which of the following is the most appropriate interpretation?

A) The results do not provide sufficient data to draw a conclusion.
B) The child currently has influenza and has previously been exposed to RSV.
C) The child has a current RSV infection and was previously exposed to influenza.
D) The child has concurrent influenza and RSV infections.
E) The child has neither influenza nor RSV.