[单选题]
An object is placed 15 cm from a conc2jj d*xhbau7 5tho .z:ave mirror of foca36b tsoz1gh5 z/5sdlcp (ncmc7w5i4cl length 20 cm. The object is 4.0 6l c/wn557 5 czzbs(3gc1im4hspco t dcm tall. How tall is the image?
A. $1.0 \; cm$
B. $2.0 \; cm$
C. $8.0 \; cm$
D. $16 \; cm$