R Company's last dividend was $1.50. Its dividend growth rate is expected to be constant at 3% for 2 years, after which dividends are expected to grow at a rate of 4% forever. Its required return (r) is 6%. What is the best estimate of the current stock price? Do not round intermediate calculations. a. $51.02 b. $84.34 C. $76.52 d. $40.99 e. $36.90