Contracts 257 Sidney agrees to prepare Charlie's tax return by April 15. In exchange, Charlie agrees to pay anyone who Sidney hires in the next two months to wallpaper Sidney's living room. Sidney prepares Charlie's tax return as promised. Sidney hires Wally's Wallpapering to wallpaper his living room. Wally is not aware of Sidney's agreement with Charlie when he agrees to wallpaper Sidney's living room. Wally completes the wallpapering job, but Charlie refuses to pay him. May Wally sue Charlie to enforce his promise to Sidney? (A) No, because Wally was a donee beneficiary. (B) No, because Wally's Wallpapering was not named in the agreement between Sidney and Charlie. (C) Yes, because Wally was an intended third-party beneficiary of the contract. (D) Yes, because Wally may recover under promissory estoppel