Using percentages or ratios based upon unforeseen differentials in prices, Forward Pricing Rates Agreements (FPRAs) protect the controtors by allowing an extra amount above and beyond the estimated quoted prices. Which of the following is NOT an example of an FPRA Rate? 1) Rates for spare parts provisioning 2)rates for material obsolescence and usage 3) Rates for corporate outings 4) Rates for indirect materials.