[单选题]
An object is placed at a concave mirror's centerg;z vx w+(eo/c76wt xn3dmpo :*4pigrcb f1*mof curvature. The image produced by the mirror if7mgt3n d4c i6w *:pp*mr1boxs located
A. out beyond the center of curvature.
B. at the center of curvature.
C. between the center of curvature and the focal point.
D. at the focal point.