Could someone kindly explain the concept behind this statement " Vector A is perpendicular to both Vector B and Vector C. So Vector A is parallel to VectorB x Vector C "
Is there any rule like if a vector is perpendicular to two other vectors, then it is parallel to their products?
Yes, there is a rule. You must now the Right Hand Rule.
This rule allows you to determine which direction will the resulting vector cross product between two vectors, for a right-handed coordinate system. Right-handed coordinate systems are the most widespread and used.
This simple rule, has many practical applications, for example, determine the direction of a magnetic field according to the direction of the current that generates it.