Correct Answer: Decrease proprietary ratio

Solution : Answer = Decrease proprietary ratio

Proprietary Ratio $=0.6: 1$
Proprietary Ratio = Proprietor fund/ Total. Assets.

$\frac{.6}{1}=\frac{60,000}{1,00,000}$

Let Buy-Back of own Shares = 30000

$=\frac{60,000-30,000}{1,00,000-30,000} \quad \frac{30,000}{70,000}$

= 0.3: 1 (Decrease)

Share Holder fund, as well as Total Assets, are decreased by the same amount. Hence, the correct option is 2.