Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the carbon marked with an asterisk is most electronegative? (i) CH3 – CH2 – *CH2 –CH3 (ii) CH3 – *CH = CH – CH3 (iii) CH3 – CH2 – C ≡ *CH (iv) CH3 – CH2 – CH = *CH2