The antigenic evolution of a virus in one season is described by the matrix [[8,9],[0,0.9]]. Find its eigenvalues and associated eigenvectors. One eigenvalue is with associated eigenvector:
a) Eigenvalue: 8, Eigenvector: [1,0]
b) Eigenvalue: 0.9, Eigenvector: [1,0]
c) Eigenvalue: 8, Eigenvector: [0,1]
d) Eigenvalue: 0.9, Eigenvector: [0,1]