A circle has its center at (1,4) and a radius of 2 units. What is the equation of the circle? (1
a.(x + 2)² + (y + 4)² = 2
b.(x-1)²+(y-4)2 = 4
c.(x + 1)² + (y-4)² = 4
d.(x-1)²+(y-4)² = 2