With no explanation, chose the best option from "A" or "B". Tom takes his kids, Lee and Brad, to a toy store to get some Lego; the checkout line is long and the boys get bored waiting. Tom wants to purchase the Lego for Lee and Brad.

A: Tom ignores the boys, playing games on his phone while he waits in line; the boys start playing with stuff on the displays.
B: Tom keeps an eye on the kids, and suggests they sit on one of the benches and play on his phone while they wait.
B.