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In Excel, optional arguments in functions are surrounded by ________

A) { } B) | | C) ( ) D) [ ]

Answer the following statements true (T) or false (F)

1. More detail is achievable through using a process called "exploding the diagrams." 2. Data flow diagrams must be drawn working from left to right on the page. 3. Data stores must always have data flow into them in a proper diagram. 4. Linear data flow from process to process is normal in higher level data flow diagrams.