Concept:The year 2012 is counted from the birth of Jesus Christ, using the AD (Anno Domini) system meaning "in the year of the Lord".Explanation:Years after Christ’s birth are written as AD 2012. AD stands for Anno Domini, Latin for "in the year of the Lord".Years before Christ are written as BC (Before Christ).Sometimes CE (Common Era) is used instead of AD, but here the correct option is AD.Answer:C. AD 2012