Regarding the relationship between Cch, 4, 1 and Cch, 4, 2, which of the following statements are correct? (Multiple Choice)

Regarding the relationship between Cch, 4, 1 and Cch, 4, 2, which of the following statements are correct? (Multiple Choice)
A . Orthogonal
B. Not orthogonal
C. Relevant
D. Not relevant

Answer: AD

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