Find the equation of the circle with center at (-1,-4) and radius of 2.
a. (x - 1)2 + (-4)2 = 4
C. (x + 1)2 + (y + 4)2 = 2
b. (x + 1)2 + (+4)2 = 4
d. (x-1)2 + (1 - 4)2 = 2