\(A\) and \(B\) start from Opladen and Cologne respectively at the same time and travel towards each other at constant

\(A\) and \(B\) start from Opladen and Cologne respectively at the same time and travel towards each other at constant speeds along the same route. After meeting at a point between Opladen and Cologne, \(A\) and \(B\) proceed to their destinations of Cologne and Opladen respectively. \(A\) reaches Cologne \(40\) minutes after the two meet and \(B\) reaches Opladen \(90\) minutes after their meeting. How long did \(A\) take to cover the distance between Opladen and Cologne?

(A) 1 hour
(B) 1 hour 10 minutes
(C) 2 hours 30 minutes
(D) 1 hour 40 minutes
(E) 2 hours 10 minutes

Answer: D

Source: Veritas Prep