From the choices below, choose the proof that shows that the product of an even integer and an odd integer is even. Since integers are closed under multiplication, 2(2j2+j) is divisible by 2 and therefore even O m*n is even if m is even O 2k*2(k+1)= 4k2+2k 2k(2k+1) is even O m*n is even if m is even and n is odd O The product of an even integer and an odd integer is always even O 2k*2(j+1)= 4kjt1 is even zj*(2k+1)= 2(j(2k+1)) Since integers are closed under multiplication, 2(j(2k+1)) is divisible by 2 and therefore even