请教OG purple SC 98

98.Two new studies indicate that many people become obese more due to the fact that their bodies burn calories too slowly than overeating.

(A)due to the fact that their bodies burn calories too slowly than overeating

(B)due to their bodies burning calories too slowly than to eating too much

(C)because their bodies burn calories too slowly than that they are overeaters

(D)because their bodies burn calories too slowly than because they eat too much

(E)because of  their bodies burning calories too slowly than because of their eating too much

答案是D

对其他选项没问题,不过D是属于什么结构啊?有这种用法吗?

明白,OG解释也是这么说的,就是觉得后半句看的别扭,不过按排除也能选出来吧.谢谢了啊