As of April 2021, the following information was sourced from the following three firms: Company Market Price/Share Outstanding Shares Santa Rosa Limited $120 10 000 Digitalization Incorporated $70 100 000 Hard Rock Limited $55 300 000 One year later it was noted that the number of outstanding shares for the companies remained unchanged. The market prices however fluctuated: Santa Rosa Limited price increased to $160, along with Digitalization Incorporated to $80 and Hard Rock Limited to $67.

A. Calculate the price-weighted stock market index and determine the percentage change between 2021 and 2022

B. Calculate the value weighted index and determine the percentage change between 2021 and 2022.

C. Assuming that the investor had $30 000 to invest, construct the unweighted price indicator series and determine the percentage change of the portfolio's wealth.