Equation of a Plane : Normal Form

Q.

What is the distance of the plane $2x-3y+4z=6$ from the origin?

1. $\frac{2}{\sqrt{29}}$

2. $\frac{3}{\sqrt{29}}$

3. $\frac{5}{\sqrt{29}}$

4. $\frac{6}{\sqrt{29}}$