Answer
A
Work Step by Step
Using the origin as a test point, we can see that $y\gt5$ is a false statement ($0 \gt5$) and $x\lt3$ is a true statement ($0\lt 3$).
With $y\gt5$ being false, we would shade above the line $y=5$. With $x\lt3$ being true, we would shade to the left of the line $x=3$.