Consider the following LP problem with two constraints: $8$X $+44$Y $>=352$ and $7$X $+20$Y $>=140.$ The objective function is Max $7$X $+22$Y $.$ What combination of X and Y will yield the optimum solution for this problem?

a$.$

unbounded problem

b$.$

$13,2\mathrm{.}45$

c$.$

$20,0$

d$.$

$0,7$

e$.$

infeasible problem