Which of the Following Best Explains 'Functional Specifications

Multiple Choice

Which of the following best explains 'functional specifications'? 

A)  Buyer decides to integrate a standard component in their product design and supplier is requested to submit a price proposal and production planning. 
B)  Supplier is responsible for submitting a prototype or sample for approval and testing. 
C)  The buyer communicates a rough design to the supplier to work out a detailed design and submit this for approval to the buyer.  When approved, the supplier is responsible for prototyping, testing and manufacturing. 
D)  Based upon functional specifications for a component or module, the supplier is responsible for conceptual design, prototype, testing and setting up production and assembly processes.