Can soneone help me with these basic vector math problems?!

Given an initial point (5,3) and a terminal point (10,-8), find the component form for vector v.

A. (2, 18)
B. (15, -5) <-- My choice
C. (5, -11)
D. (13, 13)

2. Is vector v with an initial point of (0,0) and a terminal point of (50, 120), equal to vector u with an initial point of (50, 120) and a terminal point of (0,0)?

A. No, the two vectors have different directions.

B. No, the two vectors have different initial points. <-- I think it's this one

C. Yes, the two vectors have the same magnitude.

D. Yes, the two vectors have the same slope.