Whtch of the following statement is true :-

Options

A. When the coordinate axes are trunslated the component of vector in a plane changes
B. When the coordinate axes are rotated through some angle components of the vector change but the vector's magnitude remains constant.
C. Sum of `veca` and `vecb` is `vecR`. If the magnitude of a alone is increased angle between `vecb` and `vecR` decreases.
D. The cross product of `3hati` and `4hatj` is 12.

Answer

B