What Was the "Bloody Shirt

What was the "bloody shirt"?

A) a rhetorical symbol used by Republicans and Democrats to blame each other for the Civil War
B) a rhetorical symbol of Democrats that linked the Republicans to exploitative big business
C) a rhetorical symbol of Populists that linked the two major parties to the "crown of thorns" and "cross of gold"
D) a rhetorical symbol of civil service reformers that linked patronage-mongering politicians to the assassination of James Garfield