Select a Linear Combination of the Standard Unit Vectors I

Multiple Choice

Select a linear combination of the standard unit vectors i and j of given initial and terminal points of a vector. Initial Point
Terminal Point
(-9,9) ​
​(10,-10)

A) 19i - 19j
B) ​-19i + 19j
C) ​​-19i - 19j
D) ​19i + 19j
E) ​-19i - 19j