Why are static testing and dynamic testing described as complementary?

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✪ Choose the correct option.

Why are static testing and dynamic testing described as complementary?

A. Because they share the aim of identifying defects and find the same types of defect.
B. Because they have different aims and differ in the types of defect they find.
C. Because they have different aims but find the same types of defect.
D. Because they share the aim of identifying defects but differ in the types of defect they find.