Using the cumulative data provided from the Integrated Program Management Report, what is the cost performance index (CPI) for the Armament Work Breakdown Structure (WBS) element?
(IMAGE DESCRIPTION: WBS number 1.1.5, Armament, has a BCWS of 3049, a BCWP of 2807, an ACWP of 3262, a BAC of 3818, and an EAC of 4510.)