The CDC reports concern about a new influenza strain designated A/Bali/2/2010 (H5N2). This nomenclature means
A) the virus is a type A with antigens HA 5 and NA 2 isolated in Bali in February 2010
B) the virus is the second type A strain with HA 5 and NA 2 antigens isolated in Bali in February 2010
C) the strain is a type A with 5 HA antigen and 2 NA antigens isolated in Bali in February 2010
D) the virus is a hybrid of type A and B with 5 HA and 2 NA antigen, discovered in February 2010
E) the virus is a type B strain with antigens HA 5 and NA 2, first isolated in February 2010