Which of the following statements describes an atom accurately? i. atoms of all elements are identical ii. an atom contains a nucleus and number of electrons iii. due to the electrons in the atom an atom is negatively charged iv. electrons in the atom move in circular orbits round the nucleus

• A.i and ii
• B.ii and iii
• C.iii and iv
• D.ii and iv only
• E.i,ii and iii