Why Did Pontiac's War Occur

Why did Pontiac's War occur?

A) The British stopped distributing food, ammunition and other gifts to the Indians, as the French had done, and colonists were moving onto Native American lands.
B) The British had abandoned their western forts to the French, who were abusive toward the Native Americans there.
C) The colonial government of Virginia had been pressuring Iroquois tribes to move west so that white settlement could expand.
D) Some Indian tribes objected to the alliance that had been formed with the Spanish.
E) African-American slaves in South Carolina began to fear the loss of status to Indian indentured servants.