Which sentence is the one most likely taken from an explanatory text about taking a trip by plane?

A. Carry on items must be able to fit under your seat or in an overhead compartment.

B. Bags over 45" in size (length times width times depth) are considered too large to carry on.

C. There are many things to think about as you plan a trip by airplane.

D.Travelers will be asked to take off their shoes when they pass through the security line.