The correct answer is B.
It is the only sentence that expresses correctly the time-related term, even in the four of them the numbers are right, the acronym accompanying them is not.
- Confucius was teaching in China in BC 500, where BC stands for Before Christ, referring to all historical time periods that took place before the birth of Jesus.
For example, the BC acronym should have been used too in letter A, when speaking about Homer and his works.
According to C and D, the facts described require the opposite acronym: AC, which stands for 'After Christ'. The Black Death started in A.C. 1347 and the Western Roman Empire fell to Germanic Tribes in A.C. 476.
