Multi-select problem: How does the next paragraph end?

How to measure for a lazy susan
Make sure your cabinet is a 45 degree corner or straight cabinet.
The former is found in the kitchen corner, usually sitting at a 45 degree angle between two walls. Straight cabinets are more typical and found throughout the kitchen.

Available choices: a. Stay within even heights, and write down the height and width of the cabinet. Your measurement may sound silly at first, but it's much more accurate. b. Always measure from the floor right-angle to one corner, with an appropriate measuring material you can carve out your cabinet with. A tape measure is also useful if you have unsteady legs. c. Measure for the diameter of the lazy susan. If your cabinet is a perfect square, stretch a tape measure from one wall to the opposite wall for this diameter. d. They are long and curved with matching edges. The measurement for a lazy susan comes in inches.
c.