【单选题】

Charles is working on a project and finds that one of his primary vendors is raising their costs for a key component of the product being produced by his project．In order to cover these costs，he______．
A．will ask management for a budget increase to cover the difference

B．will assume management reserve will cover the difference because this increase was out of his control
C．will use the cost change control process to obtain approval to use part of the contingency allowance
D．will go over budget and ask for forgiveness at the end of the project Charles