[amp_mcq option1=”None follows” option2=”Only I and II follow” option3=”Only II and III follow” option4=”Only I and III follow E. All follow” correct=”option2″]
The correct answer is $\boxed{\text{E}}$.
Statement 1: All trains are buses.
Statement 2: No room is bus.
Statement 3: All boats are rooms.
Conclusion 1: No boat is train.
This conclusion follows from Statement 1 and Statement 2. If all trains are buses, and no room is a bus, then no room can be a train.
Conclusion 2: No bus is boat.
This conclusion follows from Statement 2 and Statement 3. If no room is a bus, and all boats are rooms, then no bus can be a boat.
Conclusion 3: No train is room.
This conclusion follows from Statement 1 and Statement 3. If all trains are buses, and all boats are rooms, then no train can be a room.
Therefore, all three conclusions follow.