List of top Chemistry Questions on Aromatic Hydrocarbon asked in KEAM

The compound which gives the most stable carbocation in elimination reaction is

Which are carcinogenic hydrocarbon
(i) 1,2 - Benzanthracene
(ii) pent-1-yne
(iii) 1,2 - Benpyrene
(iv) cyclohexane
(v) 3-methyl cholanthrene