I practiced Rita's question and also questions from Exam Central.

As per Rita, whenever the scope is not clear, Cost Reimbursable contract is best choice.

And as per Exam Central, whenever a scope is not clear, T&M contract is best choice.

I am really confused.

Here is a sample from Exam Central -

You are a manager....Before the contract negotation, the buyer confiedes in you that design is not finalized and they want you to start the work with incomplete specifications. What type of contract should you ask for ?

A. FP