In the treynor-black model, the contribution of individual security to the active portfolio should be based primarily on the stock's a. alphab. betac. residual varianced. information ratio

Betty contracted with scooby’s skate store to deliver a pair of skates to jake for his birthday. scooby’s owner was going on a trip and delegated the delivery of the skates to brian. brian failed to make delivery.can jake sue brian for breach of contract, as he was not a party to the original contract? explain your answer. brian was not a party to the original contract. why would a court hold him responsible for failing to make delivery? if you do not think a court would hold him responsible, explain your answer. can jake sue scooby’s skates for breach of contract? explain your answer.