Property related issue - property management through a stamped agreement

Hi guys I’ll explain one case please let me know what is the possibility or probability of winning the case. Suppose Mr A & Mr B is cowners of one flat and Mr A rent out the property to the property management through a stamped agreement but here Mr B have not signed anywhere in the document. Basically it’s a agreement between Mr A and property management and that property management have not taken any consent or approval from Mr B(in fact property management doesn’t even know that property has two owners so it only entered for agreement with Mr A) Now that property management sub let the house to Mr. C for lease and taken lease amount from them, but since the day they property management have placed a tenant, property management haven’t paid the rent nor security deposit to Mr A, when Mr A went to talk to Mr C (sub tenant) regarding not receiving rent nor security deposit, Mr C filed a case against property management and Mr A and after sometime due to default from property management regarding monthly rent, many owners are filed a complaint against property management and now that case against property management is going on in CCB and the probability of property management settlement money to owners and sub tenants are very very low. So please tell me what all the options available for following: 1. What action Mr B can take ? 2. What option left for Mr C ? 3. Does Mr A and B have any obligations to settle amount to sub tenant ? 4. Can Mr B take the possession of the property ? Note: Mr A haven’t received any money from Mr C and No rent received from property management from more than year and neither a security deposit.