The key to identifying temporary book/tax differences is to find those book/tax differences that will eventually reverse from favorable to unfavorable or vice versa. For some temporary book/tax differences, the point in time in which reversal occurs is predictable with a high degree of success, and with other temporary book/tax differences, predictability of the point of reversal is far less successful. Which of the following temporary book/tax differences has a reversal point that is much HARDER to predict successfully? Assume no sudden or unexpected events occur. a. Gain(loss) on asset disposal b. Depreciation for GAAP versus tax reporting c. Warranty expense d. None of the above