What is the range of y+ in the log-law layer?

1.	What is the range of y+ in the log-law layer?
A.	30<y<sup>+</sup><500
B.	20<y<sup>+</sup><500
C.	30<y<sup>+</sup><400
D.	20<y<sup>+</sup><400
Answer» B. 20<y<sup>+</sup><500

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