Beryl is a purchasing agent for Cable & Wire Corporation. Doyle, a Cable & Wire corporate officer, gives Beryl written authority to buy for the firm as much copper as necessary. The next day, Doyle calls Beryl and tells her to buy only a certain quantity of copper and no more. Beryl shows the written authority to Earth Resources Inc., and enters into a contract to buy more than the quantity specified by Doyle. Earth Resources ships the order to Cable & Wire. Is Cable & Wire liable to Earth Resources under the contract? Is Beryl liable? In each case, if so, why? If not, why not?