What is the liability of the partners to the outsiders for contracts and torts? Which of the following is correct?

• partners are liable for each other for contracts and torts, but can claim the defence that each partner must be liable equally, even when one partner cannot be found.
• the partners are said to be jointly liable for contracts with several liability for serious matters such as torts, whereby partners are individually and jointly liable for a wrong.
• partners cannot be individually liable for any contract or tortuous liability, a litigant can only sue the partnership as a whole.
• partners are not liable to outsiders where the partnership agreement has been breached by a particular partner.

which option is right?