Sssume that your cousin holds just one stock, Eastman Chemical Bonding (ECB), which he thinks has sery little risk You agree that the stock is elatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data or Wilder's Creations and Buildings (WCB). Both companies have had loss variability than most other stocks over the past 5 years. Areasured by he standard deviation of returns, by how much would your cousin's risk have been reduced it he had held a portfolio consisting of 90% in ECB ind the remainder in W'CB? (Hint: Use the sample standard desiation forniula) Average return - Standard deviation * Seloct the correst answer. t. 40% cisats a 1305 +160