The Spanish Set Up Outposts from Florida to South Carolina

The Spanish set up outposts from Florida to South Carolina in part because:

A) Spanish missionaries hoped to convert local Native Americans to Christianity.
B) English colonists from Virginia were attacking Spanish settlements.
C) they sought to prevent the escape of African slaves to English colonies located north and east of the Savannah River.
D) the discovery of gold mines in central Florida meant that other powers were likely to encroach on Spanish territories.
E) they needed to protect St. Augustine, which became the capital of New Spain in 1542.