Which of the following is the correct result if we add the given vectors?
Graphically
Put 2nd vector's tail over the head of 1st vector.
Now draw a vector from the tail of 1st vector to the head of 2nd, This is your resultant or sum.
Also
Vector 1 is 2^j
Vector 2 is 3^j
Vector 1 + 2 = (2+3)^j