a Give the order of the given matrix b If A a identify a31 and a13 if possible O A a31 OB Identify a 13 a The order of the given matrix in the form m xn is b Identify a31 Select the correct choice below and if necessary fill in the answer box to complete your choice Element does not exist a31 3 2 1 1 OA a13 O B Element a13 does not exist 9 6 Select the correct choice below and if necessary fill in the answer box to complete your choice