In a writing signed by both parties, Paul Plannah, a renowned architect, agreed for a fee of $25,000 to design and supervise construction of a new house for Phoebe Threedee, a famous sculptor, the fee to be paid upon completion of the house. Plannah and Threedee got along poorly, and, when the design plans were about two-thirds complete, they had a heated argument over the proper location of a marble staircase. Hoping to avoid such encounters, Plannah, without Threedee's knowledge, assigned to Donna Drafty, a newly licensed architect practicing solo, "all of my rights and duties under my design and construction supervision contract with Threedee." Drafty expressly promised Plannah to carry out the work to the best of Drafty's ability."". For this question only, assume that Threedee allowed Drafty to proceed with the design work but that Drafty without legal excuse abandoned the project shortly after construction began. Which of the following legal conclusions are correct? I. Plannah is liable to Threedee for legal damages, if any, caused by Drafty's default. II. Drafty is liable to Threedee for legal damages, if any, caused by Drafty's default. III. Threedee is indebted to Drafty, on a divisible contract theory, for a prorated portion of the agreed $25,000 architect's fee promised to Plannah.
I and II only I and III only II and III only I, II, and II