A.An "unbounded error" increases with time; example: distance gone error due to a ground speed error

B.An "unbounded error" increases with time; example: increasing ground speed error due to platform not being levelled correctly

C.A "bounded error" is subject to sudden unpredictable random changes, most notable during pitching manoeuvres

D.A "bounded error" is "tied" to the real wander rates of the gyros on the platform