Given $F(4)=1, F'(4)=5, F(5)=4, F'(5)=6$ and $G(1)=3, G'(1)=4, G(4)=5, G'(4)=6$, find each of the following. (Enter dne for any derivative that cannot be computed from this information alone.)

A. $H(4)$ if $H(x)=F(G(x))$
B. $H'(4)$ if $H(x)=F(G(x))$
C. $H(4)$ if $H(x)=G(F(x))$
D. $H'(4)$ if $H(x)=G(F(x))$
E. $H'(4)$ if $H(x)=F(x)/G(x)$