The correct answer is A. The city lay in ruin after months of trench warfare and sieges.
Evacuation Sunday, also known as Evacuation Fire, was a one-day event in which Richmond was taken by the Union Troops under the command of General U.S. Grant. The capture of Richmond (which had served as the capital of the Confederate States of America during the civil war) was the final stage of the terrible 4-year war. As the fall of the city became imminent, from one they to another, the confederate defendant (President Davis and his cabinet were among them) abandoned the city and headed south) while the civilians an army stayed on the city awaiting for The Union troops to arrive.