When using the radar for navigating __________.

A
the best fix is obtained by using a tangent bearing and a range
B
and using two radar ranges for a fix, the objects of the ranges should be close to reciprocal bearings
C
and using ranges, the most rapidly changing range should be measured last
D
and crossing a radar range of one object with the visual bearing of a second object, the two objects should be 80° to 110° apart
E