advantage e. Both b and d are correct. 9. Stephanie has a skateboard that Daniel would like to have. Stephanie values the skateboard at $45 Daniel values the skateboard at $80. a. The only possible trade is one where only Daniel is better off b. The only possible trade is one where only Stephanie is better off c. No trade will occur d. In this situation there is a possibility of a trade in which both parties are better off e. More information is required to answer this question ssibilities for Huy