请选择ABCD;r*c'z8R.w;vFive and seven ________ twelve.3j*@/L9O1z3^0T(r8v
A. be3j*@/L9O1z3^0T(r8v
B. are3j*@/L9O1z3^0T(r8v
C. is3j*@/L9O1z3^0T(r8v
D. am3j*@/L9O1z3^0T(r8v