Which of the following compounds are chiral and resolvable ? $(i) \;[C_6 H_5 N^+(CH_2CH_2CH_3)(C_2H_5)(CH_3)]Br^ - ; \; (ii) C_6H_5N(CH_3)(C_2H_5) ; \\ (iii)\; CH_3CH_2CH (CH_3) (C_2H_5);\; (iv)\; HO_2C- CO_2H$

Question

$ (a)\;(i)\; and\;(iii) \\ (b) \; (ii)\;and \;(iii) \\ (c) \;(i)\;and \;(iv) \\ (d)\;(ii)\;and (iv) $