Required information P7-4 (Algo) Analyzing and Interpreting Income Manipulation Under the LIFO Inventory Method LO7-2, 7-3 [The following information applies to the questions displayed below.] Pacific Company sells electronic test equipment that it acquires from a foreign source. During the year, the inventory records reflected the following: Inventory is valued at cost using the LIFO inventory method. P7.4 Part 3 3a. How much did pretax income change because of the decision on December 31 , current year? 3b. Assuming that the unit cost of test equipment is expected to continue to decline during the following year, is there any evidence of income manipulation