calculus question thanks

Find u . ( u x v ) for the given vectors. u =3i - j +2k, v = - 21 +3j +2k . . . .. Select the correct choice below and fill in the answer box(es) within your choice. O A. The answer is a vector. u . ( u x v ) = ai + bj + ck where a = , b = and c = (Type integers or simplified fractions.) O B. The answer is a scalar. u . ( u x v ) = (Type an integer or a simplified fraction.)