Full steps, Thank you!

4. (15 points) Let A (1, 1, 0), B(2, 1, 1), C(0, 2,0), and D(1, 2, -2) be four points in R3. Using vector method: (a) (5 points) Find the volume of the parallelepiped with adjacent edges AB, AC, and AD. (b) (5 points) Find the equation of the plane that contains A, B, and C. (c) (5 points) Find the distance from the line CD to the line AB