Can someone help with this question, the discussion on its link backs up the incorrect answer so its unhelpful
The flight from Country D to Country T takes 5 hours and includes two layovers along the way. The time by train is only 4.5 hours. To save time and money, vacationers from Country D should take the train to Country T.
Which of the following, if true, would best strengthen the above argument?
A. For most residents of Country D, costs of the trip via train are the same as costs of the trip via plane.
B. The routes for both the flight and the train ride from Country T to Country D are the same as the respective routes going in the opposite direction.
C. The flight time of 5 hours is atypical for the trip from Country D to Country T.
D. The train ride from Country D to Country T offers a higher level of comfort.
E. The airline that flies from Country D to Country T no longer offers bonus points that can be redeemed for a cash rebate.