1. Chetan's share is \( \frac{1}{4} \), leaving \( \frac{3}{4} \) to be shared between Ashu and Basu. 2. Ashu and Basu sacrifice equally: \[ \text{Ashu's new share} = \frac{2}{3} \times \frac{3}{4} + \frac{1}{8} = \frac{13}{24}. \] \[ \text{Basu's new share} = \frac{1}{3} \times \frac{3}{4} + \frac{1}{8} = \frac{5}{24}. \] 3. Chetan's share is \( \frac{1}{4} = \frac{6}{24} \). Thus, the new ratio is \( 13:5:6 \). Hence, the correct answer is (A).