5. Rank the following molecules, ions and radicals in order of increasing H－C－H bond angles: CH3+; CH3-; CH2; CH22+.
(A)CH22+＞CH3+＞CH2＞CH3-
(B)CH3-＞CH2＞CH3+＞CH22+
(C)CH2＞CH3+＞CH3-＞CH22+
(D)CH3+＞CH22+CH2＞CH3-
(E)CH3+=CH22+=CH2=CH3-