Stock Portfolios. A stock portfolio is a collection of stocks that you invest in with the hope of making a profit. Rather than investing everything in a single stock, which has both high risk and high reward potential, a diverse portfolio that spans various sectors produces more resilient investments. SOL BNB ETH BTC DOGE SOL BNB ETH BTC DOGE 3805 4980 42330 468665 0.354 4980 8293 64715 700917 1.401 42330 64715 559182 6294123 14.990 468665 0.354 700917 1.401 6294123 80834339 249.131 14.990 249.131 0.005 The covariance matrix above was calculated using the daily adjusted closing values of five different crypto currency stocks over the course of a single year. a. Construct this covariance matrix in R with the proper row and column names b. Use matrix algebra to find the sum of squares and products matrix c. Use matrix algebra to find the correlation matrix d. Explain why you may want to look at a scatter plot matrix before pursuing any further analyses using these matrices