Which of the following is the decryption function for the RSA key $(8633,13)?$

HINT: $8633=97**89$

$f^{-1}(c)=c^{4549}$mod$8633$

$f^{-1}(c)=c^{4549}$mod$8624$

$f^{-1}(c)=c^{3899}$mod$8624$

$f^{-1}(c)=c^{13}$mod$8633$