Three vector `vec(A)`,`vec(B)`, `vec(C )` satisfy the relation `vec(A)*vec(B)=0`and `vec(A).vec(C )=0`. The vector `vec(A)` is parallel to

Explanation

As `vec A. vec B =0 , vec A` is perpendicular to vec B` .
As ` vec A vec C=0 ,`so ` vec A` is perpeendicular to vec C`
As ` vec B xx vec c` is perpendicular to both ` vec B and vec C`.
so ` vec B xx vec V` is parallel to ` vec A`.