Which of the following is an equation of a circle in the xy-plane with center (0,4) and a radius with endpoint (4/3,5)?

a) (x-0)² + (y-4)² = (5-4)²
b) (x-0)² + (y-4)² = (5-4/3)²
c) (x-0)² + (y-4)² = (4/3-0)²
d) (x-0)² + (y-4)² = (5-0)²