The exposure base is earned car years. a) Calculate the 2008 calendar year written exposure. b) Calculate the 2008 calendar year earned exposure. c) Calculate the 2007 policy year written exposure. d) Calculate the in-force exposure as of April 1, 2008 The exposure base is earned car years. a) Calculate the 2008 calendar year written exposure. b) Calculate the 2008 calendar year earned exposure. c) Calculate the 2007 policy year written exposure. d) Calculate the in-force exposure as of April 1, 2008