$\left({\mathrm{CH}}_{3}{\right)}_{3}\mathrm{CH}$ + ${\mathrm{Cl}}_{2}\stackrel{\mathrm{hv}}{\to }$ A(Major), the compound 'A' is

(1 mole)

1. $\left({\mathrm{CH}}_{3}{\right)}_{2}\mathrm{CH}-{\mathrm{CH}}_{2}-\mathrm{Cl}$

2. $\left({\mathrm{CH}}_{3}{\right)}_{3}\mathrm{C}-\mathrm{Cl}$

3. Equimolar mixture of (1) and (2)

4. No reaction