Multi-choice problem: Choose from the options at the end, and answer how do you do this: How to place styrofoam into the bottom of the planter.

Possible answers:
(a). Grab each styrofoam sheet and place it inside the bucket until 1/3 of the planter is full.
(b). Grab each styrofoam sheet and place it inside the planter until 1/3 of the planter is full.
(b).