Let ` vec a=2i+j-2ka n d vec b=i+jdot` If ` vec c` is a vector such that ` vec adot vec c=| vec c|,| vec c- vec a|=2sqrt(2)` between ` vec axx vec b` and ` vec ci s30^0,t h e n|( vec axx vec b)xx vec c|` I equal to `2//3` b. `3//2""` c. `2` d. `3`