When the sea conditions are not exactly calm, how will you make sure that the ullage measurement reading is closer to accurate?

A. For each tank, take 5 ullage measurements and average, then apply trim correction
B. For each tank, take 3 ullage measurements and average, then apply trim correction
C. For each tank, take 5 ullage measurements, leave the maximum and minimum values, then average the remaining three values and apply trim correction
D. For each tank, take 5 ullage measurements, leave the maximum and minimum values, then average the remaining three values.

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