<prompt>  A patient with AIDS and a CD4 cell count of 100μl. has a persistent fever and a weight loss associated with invasive pulmonary disease due to M avium complex. Optimal management of this case requires :Select an antibiotic regimen based on drug susceptibility of the cultured organismStart treatment with isoniazid and rifampicinTreat the patient with clarithromycin, ethambutol and rifabutinTreat with trimethoprim sulfamethoxazole 