23.Cú pháp câu lệnh điều kiện dạng thiếu là? (25 Điểm) then Else ;" value="A. If then Else ;" style="box-sizing: border-box; color: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: normal; font-family: inherit; margin: auto 0px auto -20px; vertical-align: middle; padding: 0px; bottom: 0px; height: 18px; outline-offset: 0px; position: absolute; top: 0px; width: 20px;">A. If then Else ; ;then " value=" B. If ;then " style="box-sizing: border-box; color: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: normal; font-family: inherit; margin: auto 0px auto -20px; vertical-align: middle; padding: 0px; bottom: 0px; height: 18px; outline-offset: 0px; position: absolute; top: 0px; width: 20px;">B. If ;then then , ;" value=" C. If then , ;" style="box-sizing: border-box; color: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: normal; font-family: inherit; margin: auto 0px auto -20px; vertical-align: middle; padding: 0px; bottom: 0px; height: 18px; outline-offset: 0px; position: absolute; top: 0px; width: 20px;">C. If then , ; then ; " value=" D. If then ; " style="box-sizing: border-box; color: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: normal; font-family: inherit; margin: auto 0px auto -20px; vertical-align: middle; padding: 0px; bottom: 0px; height: 18px; outline-offset: 0px; position: absolute; top: 0px; width: 20px;">D. If then ;