In 1974, one could buy a theater ticket for $1.25. Today, the same theater ticket costs $6.50. Which pair of CPI's would imply that the cost in today's dollars was the same for both tickets? a. 60 in 1964 and 390 today. b. 75 in 1964 and 390 today. c. 80 in 1964 and 404 today. d. 95 in 1964 and 475 today.