Which of the following represents the correct IUPAC name for the compounds concerned? (i) 2,2-Dimethylpentane or 2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane or 2,5,7-Trimethyloctane

Options

1. A(i) 2-Dimethylpentane and (ii) 2,5,7-Trimethyloctane
2. B(i) 2,2-Dimethylpentane and (ii) 2,5,7-Trimethyloctane
3. C(i) 2,2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane
4. D(i) 2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane