A) This is now orthodoxy to which I subscribe-up to a point.
B) It emerged from the mathematics of chance and statistics.
C) Therefore, the risk is measurable and manageable.
D) The fundamental concept: Prices are not predictable, but the mathematical laws of chance can describe their fluctuations.
E) This is how what business schools now call modern finance was born.
(2005)
There is a link EB. Statement E introduces "modern finance" and statement B then explains the factors responsible for its emergence. The word "it" in statement B refers to modern finance.
Hence, option B is the correct answer.