Which is untrue in the binomial option pricing model method Binomial value is the expected value discounted by the risk free rate corresponding to the option's life At each final node of the tree the option value Is simply for a Call: max(0, S_n-X] or a Put: max[0, X-s_n]. At each time step the underlying asset price will move up or down by a factor pi or (1-pi) respectively. Binomial Value = [pi *Option up + (1 - pi)*Option down] times e^-r delta t Expected value a, nodes prior to the final nodes Is calculated using the option values from the later two nodes weighted by their respective probabilities