12. In October 2018, Ben and Jerry exchange investment realty in a 1031 like-kind exchange. Ben bought his real estate in 2007 while Jerry purchased his in 2010. In addition to the realty, Ben receives Pearl, Inc. stock worth $20,000 from Jerry. Ben's realized gain is $30,000. On what date does the holding period for Ben's realty received from Jerry begin? When does the holding period for the stock he receives begin