**Question:**

**The distance of point P (3, 4, 5) from the y z-plane is**

**(A) 3 units **

**(B) 4 units **

**(C) 5 units **

**(D) 550**

**Solution:**

(A) 3 units

**Explanation:**

From basic ides of three-dimensional geometry, we know that x-coordinate of a point is its distance from y z plane.

∴ Distance of Point P (3, 4, 5) from y z plane is given by its x coordinate.

∵ x-coordinate of point P = 3

∴ Distance of (3, 4, 5) from y z plane is 3 units

Hence, option (A) is the only correct choice.