What Decision Made by Henry Clay Frick Led to the Deaths

Multiple Choice

What decision made by Henry Clay Frick led to the deaths and injuries that took place at the Homestead mill in 1892?

A) The call for the Pennsylvania National Guard to defend the plant
B) The hiring of Pinkertons to enter the plant via the river
C) The call for strikebreakers to fire on the striking workers
D) The plan to shut the plant's doors and arm nonunion workers