Cal, a partner in Carbon Copiers, applies for a loan with Englewood Bank allegedly on the firm's behalf but without the authorization of the other partners. Englewood knows that Cal is not authorized to take out the loan. If Cal defaults on the loan, liability for its unpaid amount will be imposed on

a$.$ Cal and Carbon Copiers, jointly.

b$.$ Cal only.

c$.$ Carbon Copiers only.

d$.$ Englewood only.