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Pick up the correct statement from the following : | |
A. | The horizontal angle between magnetic meridian and true meridian at a place is called magnetic declination or variance of the compass [Wrong Answer] |
B. | the imaginary lines which pass through points at which the magnetic declinations are equal at a given time are called isogonic lines [Wrong Answer] |
C. | the isogonic lines through places at which the declination is zero are termed agonic lines [Wrong Answer] |
D. | all the above. [Correct Answer] |