What restrictions are typically in place on a day-to-day basis to regulate communication between industry banks and M&A investment bankers?

What restrictions are typically in place on a day-to-day basis to regulate communication between industry banks and M&A investment bankers? 





A) Only public situations may be discussed
B) Only public companies and private companies with at least $1 billion in sales may be discussed
C) Compliance approval is needed for all face-to-face meetings
D) There are no specific rules governing the nature of these communications





Answer: D