Given the following conditions of a hyperbola, solve for the standard form of its equation
Foci: (0, - 5), (0, 5); Vertices (0, -2), (0, 2)

• A. y²/4 - x²/21 = 1
• B. y²/2 - x²/21 = 1
• C. y²/21 - x²/4 = 1
• D. y²/21 - x²/2 = 1

Answer: (A)