As between the sureties, A is liable to pay 250 rupees, B 250 rupees, and C 500 rupees. (b) A, B and C are sureties to D for the sum of 1,000 rupees lent to E, and there is a contract between A, B and C that A is to be responsible to the extent of one-quarter, B to the extent of one-quarter, and C to the extent of one-half.