That isn't the question of your comprehension though. You got the input (question) wrong because of your habit and not because you couldn't comprehend the sente

That isn't the question of your comprehension though. You got the input (question) wrong because of your habit and not because you couldn't comprehend the sentence structure. You misread the sentence and that's why you got confused over what is wrong if I get it properly. You most probably wouldn't have done this if you read it as Mars in the first place.