Differentiate Simpson's biplane EF from fractional shortening; what each represents?

• A. Simpson's biplane EF uses LV volumes; fractional shortening uses linear LV dimensions; FS often overestimates EF in regional WMAs.
• B. Fractional shortening uses LV volumes; Simpson uses linear LV dimensions.
• C. FS uses volumes; Simpson uses dimensions.
• D. Simpson's biplane EF uses LV volumes; FS often overestimates EF in regional WMAs.

Answer: (D)