homework and exercises - Energy-momentum tensor transformation

I've been trying to find how the energy-momentum tensor changes if we add a total derivative to the lagrangian:

$$L\to L+\mathrm d_\mu X^\mu.\tag{1}$$

From the answer key:

$$T^{\mu\nu}\to T^{\mu\nu}+\partial_\lambda F^{\lambda\mu\nu}\tag{2}$$ Where $$F^{\lambda\mu\nu}=\frac{\partial X^\lambda}{\partial(\partial_\mu\phi)}\partial^\nu\phi -\frac{\partial X^\mu}{\partial(\partial_\lambda\phi)}\partial^\nu\phi.\tag{3}$$ Is the above answer right? I'm not able to get this result! any help?