Find the length and direction (when defined) of uxv and vxu. u=-4i-4j-2k, v = 2i + 2j+4k uxv|= = (Type an exact answer, using radicals as needed.) Select the correct choice and fill in any answer boxes in your choice below. A. The direction of uxv is (D) i + (Dj + Dk. (Type exact answers, using radicals as needed.) OB. The direction of uxv is undefined. |vxu|= (Type an exact answer, using radicals as needed.) Select the correct choice and fill in any answer boxes in your choice below. OA. The direction of vxu is (i- + k. (Type exact answers, using radicals as needed.) B. The direction of vxu is undefined.