2. [3 points] A researcher wants to study the changes in sales of elrce bricals in denernat category. Assume the makket is made up of three detergent branda-, B and C. Also, axime. every respondent buys exactly one unit of the product in each period. a) Using the following consumer panel dati, construct a transition table (2 points). b) Market share of A in 2021 based on this panel data: ( Market share of C in 2022 based on this panel data: )(0.2poind))(022point) c) What percentage of individuals in total switched brands between periods 2021 and 2022?(0.2 point) d) Which brand exhibited the worst loyalty performance (hint: calculate retention rates)? Show your calculations. ( 0.4 point)