In Practical Terms, the Assessment of a New Entry's Attractiveness

In practical terms, the assessment of a new entry's attractiveness is __________.

A) a decision made using one part logic and three parts luck
B) really about the entrepreneur's belief that he or she can make it work
C) not a rational decision but an emotional one
D) best left to professionals such as accountants and venture capitalists
E) None of the answers apply.