题目9单选题
以下中规模集成数字器件(MSI),属于加法器的为()A. <img src="https://tihai-oss-cloud.itihey.com/img/eee3ad3843122a45528af058c346d751.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/948e1d98ce540b9c4e05608316037de2.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/b3d26bb8c4908b896f6c28f107ab488e.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/227b7eb05088c3f258b9cd13c2009d35.png">E. <img src="https://tihai-oss-cloud.itihey.com/img/7c754d40cd26a6e2bb277264b0857f45.png">