Use the Information Below to Answer the Following Question(s)

Use the information below to answer the following question(s) .
A computer manufacturer procures memory chips from its key supplier.The tool that the manufacturer uses to monitor the part supplier is a supplier scorecard.With respect to delivery performance,the primary performance metric monitored is the percentage of orders delivered complete and on-time.The manufacturer also monitors the supplier's service performance and measures the invoice accuracy rate (% of invoices that are accurate) .The following measures are used for the scoring criteria:
Data collected on the supplied orders over the present quarter indicated that 350 orders were delivered and out of these 10 orders were incomplete,5 orders were late and another 15 orders were incomplete and late.Also out the 350 invoices for the shipments delivered,there were errors on 50 invoices.
-What is the service performance-i.e. ,percentage of invoices that are accurate for this quarter?

A) 55%
B) 78%
C) 86%
D) 92%