Given below are four sentences in jumbled order. Pick the option that gives their correct order.
A. It was interesting to find out that the centre operates 24 hours a day all year round.
B. The recent trip to the recycling centre was a very useful experience.
C. However, it was surprising to learn that the centre only collects 50% of the waste as a lot of it is used as landfill.
D. The main aim of the visit was to find out about the systems put in place to recycle waste.