It's surprisingly easy to safeguard yourself so you you can get on with your project with confidence. Find out how long the company has been in business. Check references. Really. Negotiate payment terms. Protect Yourself. Understand the scope of work before you sign a contract.
C contracts refer to the standard contract vehicle type (Federal Acquisition Regulation (FAR) Part 16, n.d.), generally used when initial requirements are more definite and there is a more established schedule.