When is the course deviation indicator (CDI) considered to have

When is the course deviation indicator (CDI) considered to have a full-scale deflection?

A.When the CDI deflects from full-scale left to full-scale tight, or vice vers

B.When the CDI deflects from the center of the scale to full-scale left or right.

C.When the CDI deflects from half-scale left to half-scale right, or vice vers

正确答案是B