Lulu orders 20 pairs of navy blue pants from Peter for $4,000. In receipt of 20 pairs of sky blue pants, Lulu begins offering the pants for sale in her store. After a few days, when no one buys the pants, Lulu ships them back to Peter, claiming that the pants aren't the color that was specified in the contract and claiming that Peter needs to ship her conforming goods. Peter claims he doesn't have to do anything and that Lulu owes him $4,000. Which of the following statements is true? a. Peter must ship to Lulu 20 pairs of navy blue pants b. Lulu owes Peter $4,000 because she accepted the pants c. Lulu owes Peter nothing because she hasn't accepted the pants until she either pays or signifies that the pants conform to the requirements of the contract d. Lulu owes Peter $4,000 because the pants approximate what was required under the contract