Bartman Industries's and Reynolds Inc.$\text{'}$s stock prices and dividends, along with the Winslow $5000$ Index, are shown here for the period $20152020.$ The Winslow $5000$ data are adjusted to include dividends. Please help with a$,$ b$,$ c$.$ Thank you

Excel Activity: Evaluating Risk and Return

$\backslash$table$[[$Year$,$Bartman Industries,Reynolds Inc.,$\backslash$table$[[$Winslow $5000],[$Includes Dividends$]]],[$Stock Price,Dividend,Stock Price,Dividend$],[2020,$$$16\mathrm{.}65,$$$1\mathrm{.}16,$$$48\mathrm{.}25,$$$2\mathrm{.}50,$$$11,245\mathrm{.}31$