Which combination includes Lamivudine with Efavirenz?

The combination of Lamivudine and Efavirenz is found in all of the choices listed, making "All of the above" the correct answer.

Atripla is a well-known fixed-dose combination HIV medication that includes Efavirenz; however, it specifically combines it with Tenofovir and Emtricitabine, not Lamivudine. Symfi Lo contains Lamivudine alongside Efavirenz and Tenofovir disoproxil fumarate but in a lower dose of Efavirenz. Symfi also includes Lamivudine with Efavirenz and Tenofovir, similar to Symfi Lo but without the adjusted dose.

Thus, since each option mentioned either Lamivudine or Efavirenz as part of its formulation, they all support the presence of these two drugs in their combinations. Therefore, the most inclusive and accurate choice is indeed "All of the above."