Sheila has decided to grow her hair out to donate it to charity. She has a ponytail right now that is 1 centimeter long, but the charity requires candidates to have ponytails at least 10 centimeters long. How long does she have to grow it out before she can consider donating her hair?
1) About half a year
2) A little less than a year
3) About two years
4) Nearly five years
