问题详情

What is the sense relation between Sentence A "Johns computer needs repairing" and Sentence B "John has a computer"？
A．Sentence A entails sentence B
B．Sentence A presupposes sentence B.
C．Sentence A is a prerequisite of sentence B
D．Sentence A is an entailment of sentence B.请帮忙给出正确答案和分析，谢谢！