Question 7 For which of the following items might a valuation account be used for the deferred tax item if income is doubtful in future years? Not yet answered Select one: Points out of O a. Net Operating Loss Carryforward, but not Unearned Revenue 2.00 O b. Unearned Revenue, but not Net Operating Loss Carryforward Flag question O c. Both Unearned Revenue and Net Operating Loss Carryforward O d. Neither Unearned Revenue nor Net Operating Loss Carryforward