What is a primary principle of the Rapid Application Development methology? One of the primary principles of the Rapid Application Development methology is early prototyping of the _ in the development cycle.

I tried "product" and it was incorrect

Match the following errors with their definitions. a. #name b. #value c. #ref d. 1. when a formula produces output that is too lengthy to fit in the spreadsheet cell 2. when you enter an invalid cell reference in a formula 3. when you type text in cells that accept numeric data 4. when you type in a cell reference that doesn’t exist