A student in the contemporary United States is researching the ancient Roman city of Pompeii, which was destroyed by a volcanic eruption in 79 CE. Which of the following is an example of a secondary source the student might consult during his research
A. An account written by a Roman soldier who saw the volcano erupt
B. A video documentary about the destruction the volcano caused in the city
C. An entry from a journal written by a citizen of Pompeii before the eruption
D. A painting of a market in Pompeii that dates from the early first century CE