下段关于研究结果的汇报，如何排列以下各句，使其符合结果的论证顺序？a)This is likely to be because more modern homes are better insulated than older homes. b)This may well be because flats often have a reduced external wall area to volume ratio whereas in detached homes this ratio is high.c)There was a general trend towards higher mean and maximum internal temperatures in the living room and bedroom as house age decreased. d)Thus modern homes (i.e. built after 1990) had the warmest living rooms and bedrooms on average and pre-1919 homes the coolest. e) Considering house type, flats had the warmest living rooms (and almost the warmest bedrooms) whereas detached homes had the coolest.