There are four buses; their origins are the cities of A, B, C, and D. their destinations are the cities of E, F, G, and H.
They park in a gasoline station in a line to get fuel. after a while, they start to go to their destinations (not in the order of cities they are from and/or going to, which was mentioned in the first paragraph).
Information (in the gas station):
- the bus that is destined to E is exactly in front of the bus that is originated from A.
- the buses that are destined to F and G, are placed consecutively in the line (the order of these two buses is unknown).
- one of the buses is going from B to H.
- the origin of the first and last buses in the line is one of the cities B and C.
Question: If the last bus is destined to F, then which city is the origin of the bus that is going to E?