Xiao Li said, "I passed all the exams and got a motor vehicle driver's license."
If what Xiao Li said is not true, the following options must be correct ().
Xiao Li failed at least one subject.
Xiao Li failed only one subject.
C. Xiao Li failed at most one subject.
D. Xiao Li failed all the exams.
A: A.
Error-prone answer: d
This question examines true and false reasoning.
The title says "Xiao Li passed all", that is, all A's are B's. If what Xiao Li said is not true, then from the contradictory proposition that "all A's are B's", it can be concluded that some A's are not B's. The fact is that some subjects failed in the exam, and some said that 1 was all. So Xiao Li failed at least one exam.
So, the answer to this question is option A.