Final answer:
The first Whataburger opened outside Texas in 1959, though the question's options do not include this year. There appears to be an error in the provided choices.
Step-by-step explanation:
The first Whataburger outside Texas opened in the year 1959, which is not one of the options provided in the question. Therefore, it seems there is an error in the options. The founding of Whataburger initially occurred in 1950, in Corpus Christi, Texas, by Harmon Dobson and Paul Burton. The chain expanded beyond Texas for the first time in 1959 when it opened its out-of-state location in Pensacola, Florida.