Greg is planning to purchase a new truck. He wants to purchase the best one within his budget. He searches the Internet, consults his friends, and visits dealerships to learn more about different brands of trucks. He compares the features and the prices of the different trucks on a comparison shopping website. Which of the following decision-making perspectives best describes Greg's decision-making process?

a. The rational decision-making perspective
b. The behavioral influence decision-making perspective
c. The experiential decision-making perspective
d. The affect-based decision-making perspective