1, unreasonable. Since the repair fees owed by the maintenance of the common property are joint and several debts, all partners shall bear the responsibility for repayment, so Party B has no right to refuse to repay all the maintenance fees. If Party B undertakes all, it has the right to recover the excess from other partners.

2. No rights. Article 97 of the Property Law stipulates that the disposal of jointly owned immovable property or movable property shall be subject to the consent of the joint owners or all the joint owners accounting for more than two thirds. Without the consent of other partners, Party C has no right to dispose of the partnership property.

3. yes. The internal rules or agreements of partners shall not be against bona fide third parties. E didn't know that C had no right to dispose of it, but paid the corresponding consideration reasonably, which was obtained in good faith!