6. Which of the following increases basis risk? a. A large difference between the futures price when the hedge is put in place and the futures price when the hedge is closed out b. A large difference between the spot price when the hedge is put in place and the spot price when the hedge is closed out C. Dissimilarity between the underlying asset of the futures contract and the hedger's exposure d. A reduction in the time between the date when the futures contract is closed and its delivery month e. None of the above