Is it C or D??? Because I’m confused on how in an alkyne it consists at least 1 triple bond but is made up of one sigma bond and two pi bonds. So would it be single and triple? Or only triple? And also on answers.com it says that it’s single and triple so....yea I’m just really confused..help! Apex

Is it C or D Because Im confused on how in an alkyne it consists at least 1 triple bond but is made up of one sigma bond and two pi bonds So would it be single class=