If a substance has a volume of 125 mL125 \text{ mL}125 mL, what is its volume expressed in deciliters (dL)\text{deciliters (dL)}deciliters (dL)?
1.25 dL1.25 \text{ dL}1.25 dL
12.5 dL12.5 \text{ dL}12.5 dL
0.125 dL0.125 \text{ dL}0.125 dL
1250 dL1250 \text{ dL}1250 dL