Jen and Joe are excited about the new project and are determined to address the newly discovered structural issues. They meet Sanjay at the building site to brainstorm ways to achieve the design objectives for the space while staying within the $$200,000$ budget. Jen also reminds Joe about the $5$ month move$-$in deadline, but he is reluctant to commit given the structural work that needs to be done. Jen is concerned that Joe's work could take more than $5$ months to complete, given the issues that he has identified on the site. What type of Cost Reimbursable Contract should she negotiate with Joe?