Which is the equation of a hyperbola with directrices at x = ±2 and foci at (5, 0) and (−5, 0)?

y squared over 40 minus x squared over 10 equals 1
y squared over 10 minus x squared over 15 equals 1
x squared over 10 minus y squared over 40 equals 1
x squared over 10 minus y squared over 15 equals 1