C-04-Q026mediumsingle_mcq(ap)q⋅(aq)r⋅(ar)p(a^p)^q \cdot (a^q)^r \cdot (a^r)^p(ap)q⋅(aq)r⋅(ar)p on simplification equals a?a^?a?:apqrpqrpqrbpq+qr+rppq + qr + rppq+qr+rpc