(A) True
(B) ** False
EXPLANATIONS BELOW
Concept note-1: -Civil War Breaks Out Like many people at the time, McClellan opposed the outright abolition of slavery, though he was committed to the preservation of the Union.
Concept note-2: -On the eve of Antietam, McClellan would tell Washington he faced a gigantic Rebel army “amounting to not less than 120, 000 men, ” outnumbering his own army “by at least twenty-five per cent.” So it was that George McClellan imagined three Rebel soldiers for every one he faced on the Antietam battlefield.
Concept note-3: -McClellan ordered the construction of siege fortifications and brought his heavy siege guns to the front. In the meantime, Gen. Johnston brought reinforcements for Magruder. McClellan chose not to attack without more reconnaissance and ordered his army to entrench in works parallel to Magruder’s and besiege Yorktown.