Centre of the circle is (a, b) . If (0,3) and (2,0) are two points on a circle , then find the relation between a and b .
A. 4 a − 6 b − 5 = 0
B. 4a + 6 b - 5 = 0
C. − 4 a + 5 = 0
D. 4 a − 6 b + 5 = 0