What advice should be given to the patients after weight loss surgery?

A、Theymusteatsmallerportionsandfewercalories.;
B、Theyneedtomakesuretheytakesupplementseveryday.;
C、Theyneedtoconsultwithanutritionistwhoisfamiliarwithobesityanddiabetes.;
D、Theyarenotallowedtoeatsolidfoodsatthebeginningafterthesurgery.