3M Company executives were perplexed when the company's Scotch-Brite floor-cleaning product initially produced lukewarm sales in the Philippines. A Filipino employee explained that consumers generally clean floors by pushing coconut shells around with their feet. 3M changed the shape of the pad to a foot and sales soared. 3M changed its product in response to a Filipino _________.
A. value
B. belief
C. custom
D. idiosyncrasy
E. demographic pattern