(x-y fx,y) =}4y when (x, y) * (0,0) o, when (x,y) = (0,0) then the correct answer in the following: (a)f x, y) is differentiable at (0,0) (6) fc0,0)=1 (c)jy(0,0

(x-y fx,y) =}4y When (x, y) * (0,0) o, when (x,y) = (0,0) then the correct answer in the following: (a)f x, y) is differentiable at (0,0) (6) fC0,0)=1 (C)Jy(0,0) =1 (d) None of these O a O b O C O d Iff)=} wheny *0 then ,whenx = y = 0 (a) fx,y) is continuous at origin (b) fx, y) is discontinuous at origin (c)fx,y) is Removable discontinuous (d) None of these Oa Ob O O d