Trips to Grandma's House Always Take 90 Minutes

Trips to grandma's house always take 90 minutes. At the start of the trip, children ask in a complaining tone, "How long 'til we are there?" Near the end of the trip they ask "Are we there yet?" According to research using bisection tasks,

A) at about 45 minutes into the trip the children are just as likely to ask either question.
B) if the parent turns on the radio at the halfway mark, the children will continue asking the first question.
C) the children use the number of times they ask the question to keep track of time.
D) the children use the type of question they are asking to keep track of time.