WHAT_IS_D‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•ALEMBERT‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_PARADOX??$#

• A. Resistance= 0
• B. Drag force= 0
• C. Temperature = 0
• D. Pressure gradient= 0