Which of the Following Sentences Is Punctuated Correctly

Multiple Choice

Which of the following sentences is punctuated correctly?

A) The following three factors influenced our decision; an expanded market, a source of raw materials, and a source of labor.
B) The following three factors influenced our decision: an expanded market, a source of raw materials, and a source of labor.
C) The following three factors influenced our decision.An expanded market, a source of raw materials and a source of labor.
D) The following three factors, influenced our decision: an expanded market, a source of raw materials and a source of labor.