In a Study to Demonstrate That Subtle Factors May Influence

In a study to demonstrate that subtle factors may influence our persuasion, McCall & Belmont (1996) presented diners with a tray that either featured a credit card emblem or a blank tray. The researchers found

A) customers who were presented with the emblem were more likely to pay with a credit card.
B) customers who were presented with the emblem were more likely to pay with cash.
C) customers who were presented with the emblem, tipped significantly more.
D) customers who were presented with the emblem were more likely to linger longer before paying.