Jordan and Justin are partners in a real estate investment group. Jordan invests $500,000 of his own money to acquire properties for the general partnership. Justin invests no money, but provides his labor only. Justin handles the real estate transactions. Justin makes some bad deals and now the group owes $800,000 in delinquent mortgage

payments. Justin can be held personally liable for:

a) $400,000;

b) $800,000;

c) $0.00;

d) only for the portion of the $800,000 that he approved.