Which of the Following Is Not Necessarily a Beneficial Feature

Which of the following is not necessarily a beneficial feature of the HJM binomial tree class of models?

A) The drift term is obtained in analytical form as a function of the volatilities.
B) The binomial tree carries the entire term structure of forward rates at each node.
C) The tree is recombining because the drift terms are available in analytical form.
D) The approach requires only drawing the tree out to the maturity of the option,and not to the maturity of bonds underlying a bond option.