biscuit

We have a BPA issued under FAR Part 8 for software maintenance with several options years and we're in the last option year. Throughout each option year we're in the practice of issuing calls with firm requirements and also including option items within the same call due to lack of funding. When I questioned why we didn't issue a separate Call when funding became available (instead of including options) I was told that a call is a "contract" and "contracts" can have options. I'm not use to seeing this practice but I can't find anything in the regs that say we can't do this. Thoughts/comments appreciated.