According to the Book, Which of the Following Sequences Is

According to the book, which of the following sequences is correct when you want to start a new business?

A) Identify the exact competitors within that industry, determine who your potential customers might be, define the industry that interests you
B) Define the industry that interests you, determine who your potential customers might be, identify the exact competitors within that industry
C) Determine who your potential customers might be, identify the exact competitors within that industry, define the industry that interests you
D) Identify the exact competitors within that industry, define the industry that interests you, determine who your potential customers might be