Determine whether each of these compound propositions is satisfiable.

a$)(pvvnotq{)}^{{?}^{?}}(notpvvq{)}^{{?}^{?}}(notpvvnotq)$

b$)(pq{)}^{{?}^{?}}(p$notq${)}^{{?}^{?}}(notpq{)}^{{?}^{?}}(notp$notq$)$

c$)(pharrq{)}^{{?}^{?}}(notpharrq)$

You need to write under which combination

these compound propositions are satisfiable. If

it's unsatisfiable, you don't need to write the

reason.