Answer
The answer is (b)
Work Step by Step
Because $\overrightarrow{A}$ lies only along the y-axis and is pointed downward, we know that $\overrightarrow{A_x}=0$ and $\overrightarrow{A_y}$must be some negative value.
The only option that fits that description is (b) $\overrightarrow{A_x}=0$ and $\overrightarrow{A_y}=-450.0$
