Before It Was Publicly Known That IBM Was Going to Take

Before it was publicly known that IBM was going to take over Lotus Development, an IBM secretary told her husband, who told two co-workers, who told friends, relatives, business associates, and even a pizza delivery man. A total of 25 people received the information and traded on this tip to make a profit. These people were

A) acting really smart.
B) participating in insider trading.
C) stealing from IBM.
D) acting fairly.