A、rEtAilEr sElls 5 shirts. thE First 2 hE sElls For $64 AnD $39. iF thE rEtAilEr wishEs to sEll thE 5 shirts For An ovErAll AvErAgE priCE oF ovEr $50, whAt must BE thE minimum AvErAgE priCE oF thE rEmAining 3 shirts A、$49.00 B、$49.67 C、$50.00 D、$51.33 E、$55.50