Why should you present a value proposition in 30 seconds or less?

A.
because mass media commercials are usually 30 seconds, and that has become the standard

B.
because most customers who want workstations are busy people who have limited time for
product discussions

C.
because you are only trying to create a level of value to open the door for a broader discussion
of your solution

D.
because data shows that workstation customers lose interest after approximately 30 seconds