Chapter 3.4, Problem 4EYU

Which of the vectors shown in Figure 3-20 has the same direction as (a) $\left(\text{1m}\right)\hat{\text{x}}\text{ + }\left(\text{1m}\right)\hat{\text{y}}$, (b) $\left(\text{1m}\right)\hat{\text{x}}\text{ - }\left(\text{1m}\right)\hat{\text{y}}$, (c) $-\left(\text{1m}\right)\hat{\text{x}}\text{ + }\left(\text{1m}\right)\hat{\text{y}}$, (d) $-\left(\text{1m}\right)\hat{\text{x}}-\left(\text{1m}\right)\hat{\text{y}}$?