[单选题]
An object is 5.7 cm from a concavor d.duvv7:4:y oym;h8c3 p8 4jipryz nz7nu9ouzx 0;vw i.t5a g1e8ue mirror. The image is 4.7 cm tall, and 10 cm from the mirror. How tall is the utnuw785i.z0xan; 9 oe1v guzobject?
A. $12 \; cm$
B. $11 \; cm$
C. $8.2 \; cm$
D. $2.7 \; cm$