题目4单选题
在谓词逻辑表示法中被称为"合取"的符号是A. <img src="https://tihai-oss-cloud.itihey.com/img/e576218514e9784a81403e1138ed4d9e.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/5a93af0394c634aa1be9de432251b09a.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/b20005926eaaa9be5814bed1e5b16da3.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/bee0201875ec86bd9bb97bf57854003b.webp">