Sentence Correction (SC) | Re: Although American fast food restaurants once used only domestic beef

Although American fast food restaurants once used only domestic beef, the hamburgers produced by companies like McDonald's are now made using a variety of beef sources, sometimes from America and sometimes theycome ---as a consequence of there simply not being enough domestic lean cattle beef to satisfy demand --- from countries like Australia and New Zealand.

(A) sometimes from America and sometimes they come
(B) sometimes from America and sometimes
(C) that come sometimes from America or sometimes
(D) from America sometimes, or sometimes they come
(E) from America sometimes, or sometimescoming