Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order.

A. When he returned, there was more than just his dog waiting for him.
B. A koala had joined the dog in the car’s more comfortable climate.
C. A winemaker in South Australia left his air-conditioned car open to help keep his dog cool in the heat.
D. Although the human struggled a while to make the koala leave, it did leave his car eventually.