Statement II: E gave his presentation 3 days after F, who gave his presentation on an even day (There are two possibilities for the date of F i.e. 2nd and 4th March and accordingly, 5th and 7th March for E.) Statement III: At least two people gave presentation before F. (Implies, F must have gave his presentation on 4th of March.) Hence, statement II and statement III are sufficient to answer the question.