Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to plant sycamore tree seeds [title] Plant the seeds in a shallow tray. [step] Sycamore seeds grow best when you start them in a tray and then transfer them to a pot. Choose a shallow growing tray, but one that's deep enough to let the seed take root.

Ending1: The plant will grow to about 4 inches (10 cm) in the first 2 months. [title] Bury the seeds about 0.125 inches (0.32 cm) deep. Ending2: Medium-sized plants will need a tray with wide open edges. [substeps] Choose a container at least three inches deep or larger. Ending3: Cover the tray with leaves, or compact the soil so the seeds don't sink to the bottom. [substeps] The tray should at least cover the pot if you have thick soil. Ending4: [substeps] If you don't have a tray, set a second tray on top of the soil. If you want to plant them in a tray with high sides, you can alternate rows of seeds so there's more room in each tray.

Answer format: ending1/ending2/ending3/ending4