Which of the following is not considered as a tool at the system desig

1.	Which of the following is not considered as a tool at the system design phase?
A.	piechart
B.	data-flow diagram
C.	decision table
D.	systems flowchart
E.	None of the above
Answer» B. data-flow diagram

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Which of the following is not considered as a tool at the system design phase?

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