X, Y and Z are partners sharing profit and loss equally. Their capital balances on 31^th March 2012 are Rs. 80,000, Rs. 60,000 and Rs. 40,000, respectively. Their personal assets are worth as follows: X - Rs. 20,000, Y - Rs. 15,000 and Z - Rs. 10,000. The extent of their liability in the firm would be

A. X - Rs. 80,000, Y - Rs. 60,000, Z - Rs. 40,000

B. X - Rs. 20,000, Y - Rs. 15,000, Z - Rs. 10,000

C. X - Rs. 1,00,000, Y - Rs. 75,000, Z - Rs. 50,000

D. Equal

Answer: Option B