Question $8$ You are given the following information. Using a two $-$ step trending procedure answer the questions below $-$ The experience period is January $1,2011$ through December $31,2013-$ Planned effective date is July $\backslash (1,2015\backslash ).-$ Rates are reviewed annually. $-$ Policies have six$-$month term. $-$ The trend will apply to calendar$-$accident year $2012$ earned premium at current rate level. a$)$ Calculate the beginning and ending dates for each of the step $1$ and step $2$ trend periods, assuming the selected trend is based on average written premium. b$)$ Calculate the beginning and ending dates for each of the step $1$ and step $2$ trend periods, assuming the selected trend is based on average earned premium.