Evaluate the following double integral over the region $R$ by converting it to an iterated integral.

${}_R(x+8y)dA$;$R=\{(x,y)$:$2x3,2y5\}$

Choose the two integrals that are equivalent to ${}_R(x+8y)dA.$

A$.{\displaystyle \underset{2}{\overset{5}{}}}{\displaystyle \underset{2}{\overset{3}{}}}(x+8y)dxdy$

B$.{\displaystyle \underset{2}{\overset{3}{}}}{\displaystyle \underset{2}{\overset{5}{}}}(x+8y)dydx$

C$.{\displaystyle \underset{2}{\overset{3}{}}}{\displaystyle \underset{2}{\overset{5}{}}}(x+8y)dxdy$

D$.{\displaystyle \underset{2}{\overset{5}{}}}{\displaystyle \underset{2}{\overset{3}{}}}(x+8y)dydx$

Evaluate the integral.

${}_R(x+8y)dA=,(Typean$ exact answer.$)$