Question

In Mathematics, consider points A(2,3) and B(-2,0).
(i) Write AB as a column vector.
(ii) What is the length of the vector AB?
a) AB = [4, 3], Length = 5
b) AB = [-4, -3], Length = 5
c) AB = [4, -3], Length = √13
d) AB = [-4, 3], Length = √13