Please give explanation of each of the option which is correct as soon as possible

Question 6 (1 mark) Which of the following statements are always true. Select all that apply For any graph G with vertices V, and edges E, JE| e O(IVI") (b For any graph G with vertices V. and edges E. [E| E Q(IVI=) (c) For any tree T with vertices V, and edges E, JE| E O(|VI) (d) For any tree T with vertices V, and edges E. [E| e (IVI)