Sometimes We Reason Carefully and Deliberately Through an Argument, Scrutinizing

Sometimes we reason carefully and deliberately through an argument, scrutinizing each step. In this sort of case:

A) all of our thoughts will be entirely conscious even if we are unconscious of our thoughts in other situations
B) the processes of our thoughts but not the products will be consciously available
C) our sequence of thoughts depends on an unconscious support structure that guides how we interpret the elements of each thought
D) there are no unconscious processes involved