1.If x>0x > 0x>0, y>0y > 0y>0, z>0z > 0z>0, xy+yz+zx<1xy + yz + zx < 1xy+yz+zx<1 and if tan−1x+tan−1y+tan−1z=π\tan^{-1} x + \tan^{-1} y + \tan^{-1} z = \pitan−1x+tan−1y+tan−1z=π, then x+y+zx + y + zx+y+z equals toa.000b.xyzxyzxyzc.3xyz3xyz3xyzd.xyz\sqrt{xyz}xyzLogin to continueOnly logged in users canattempt or see the solution.