gEorgE's AppliAnCE CEntEr sElls Big sCrEEn tElEvisions. on A rEprEsEntAtivE moDEl, whEn thE priCE wAs rEDuCED From $ 2450 to $ 2275, monthly DEmAnD inCrEAsED From 175 to 211 units. whAt is thE priCE ElAstiCity oF DEmAnD
A．

A. -2.14.

B．

B. -1.69.

C．

C. -2.53.