Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)? A) x squared over 16 minus y squared over 4 equals 1
B) x squared over 12 minus y squared over 4 equals 1
C) y squared over 16 minus x squared over 4 equals 1
D) y squared over 12 minus x squares over 4 equals 1