A decision problem has the following three constraints: $15$X $+14$Y $<=210$; $7$X $+13$Y$=91$; and $3$X $-$ Y $<=28\mathrm{.}384615.$ The objective function is Min $24$X $+26$Y $.$ The objective function value is :

a$.$

$282$

b$.$

$0$

c$.$

$564$

d$.$

infeasible

e$.$

unbounded