Final answer:
Whataburger Inc. delivered its first $1 million net Saturday in 1990 (A).
Step-by-step explanation:
Whataburger Inc. achieved its first $1 million net Saturday in 1990, marking a significant milestone in its financial success. Whataburger, a Texas-based fast-food chain, reached this milestone in 1990. This achievement underscored the company's growing popularity and financial stability within the fast-food industry. The $1 million net earnings on a single Saturday demonstrated the chain's strong customer base and efficient operational capacity, reflecting its successful business model and customer satisfaction. This significant milestone in 1990 was a testament to Whataburger's market presence and its ability to generate substantial revenue, solidifying its position as a prominent player in the fast-food industry.
The correct answer is A) 1990.