iF thE priCE oF A CAnDy BAr inCrEAsEs From $ 0.50 to $ 0.55 AnD thE quAntity DEmAnDED DECrEAsEs From 267 to 235, thE priCE ElAstiCity oF DEmAnD is:
A．

A. -1.23.

B．

B. 1.23.

C．

C. -1.34.