Step 1: Concept
The axis of the parabola $x=0$ is the y-axis. The vertex must lie on the axis.
Step 2: Meaning
A point on $x=0$ has the form $(0, y)$.
Step 3: Analysis
Distance from origin $(0,0)$ is 3. Since it is “above the x-axis”, the y-coordinate must be positive.
Step 4: Conclusion
The vertex is $(0, 3)$.
Final Answer: (E)