The point `( [P + 1] , [P] )` (where [.] denotes the greatest integer function), lyinginside the region bounded by the circle `x^2 + y^2 - 2x - 15 = 0 and x^2 + y^2 - 2x - 7 =0,` then :
A. `P""in[-1,0)uu[0,1)uu[1,2)`
B. `P""in[-1,2)-{0,-1}`
C. `P""in(-1,2)`
D. None of these