Suppose a Market Researcher Consulted Multiple Information Sources Regarding the Addition

Suppose a market researcher consulted multiple information sources regarding the addition of a movie theater to a local community, and found the following: Percent of Local Movie Goers
2011 2011
Theaters within 10 Miles Local Audience Ticket Sales
Garland 18% 25%
Plano 22% 20%
Richardson 19% 10%
The studies were conducted via anonymous polls on city council website for the first two, but the third involved in person surveys of visitors entering and exiting the theater? Why should the researcher question the numbers in the website studies?

A) age of the website studies
B) how the information was collected
C) inconsistency with how the information was collected
D) sufficiency of the information collected
E) purpose of the study