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