Assuming that $T_g\text{'}$s of polymer $($A$)$ and polymer $($B$)$ are $-10C$ and $70C$ respectively, consider the

following:

$($a$)$ A $50$:$50($by weight$)$ A and B random copolymer $($Sample rc$)$

$($b$)$ A $50$:$50($by weight$)$ immiscible blend of A and B $($Sample ib$)$

At what temperature or temperatures would you expect to see glass transition$($s$)$ for Sample rc and

Sample ib$.$