I don't understand how to solve the following question.

Every summer, Matt travels by air to see his grandmother. Matt's maximum willingness to pay for an airline ticket is $260, but the airline requires a minimum of only $100 to fly him. Normally, Matt pays the airline the going market price of $250 per ticket. If the government places a $50 tax on each ticket, raising ticket prices to $270 and causing Matt not to go, what is the deadweight loss created by this tax?

A) $160

B) $150

C) $10

D) $260