The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found().
A、A.on loran charts covering areas where sky waves are used
B、B.in the Radio Aids to Navigation,PUB 117
C、C.in the Loran-C Correction Tables
D、D.Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading