Saraswathi Enterprises Ltd$.,$ Bharathi Enterprises Ltd$.,$ and Vani Enterprises Ltd$.$ each will pay a dividend of Rs$.2\mathrm{.}70$ next year on their respective common stock. The growth rate in dividends for all three companies is expected to remain constant at $5$ percent forever into the future. The required return $($based on the respective level of risk$)$ for each company$$s common stock is $8\mathrm{.}5$ percent, $10\mathrm{.}5$ percent, and $15\mathrm{.}5$ percent, respectively. Answer the following questions?

a$.$ What is the stock price for each company?

b$.$ What can you conclude, based on your answers to part $($a$)$ above, about the relationship between the required return and the stock price?