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(Choose 2 answers)
Different estimating techniques serve different purpose, which of the following statements are correct (choose2 answers)?
A. When activity duration or resource quantities are uncertain, use top-down estimating techniques.
B. When detail is available and accuracy is needed, use bottom-up estimating techniques.
C. When activity duration or resource quantities are uncertain, use bottom-up estimating techniques.
D. When detail is available and accuracy is needed, use top-down estimating techniques.
