Carrie has listed the following numbers in order from least to greatest.
 StartFraction 2 Over 6 EndFraction, one-half, StartFraction 4 Over 5 EndFraction
 Which number can she add to the beginning of her list and still keep the list in order?
 StartFraction 1 Over 8 EndFraction
 StartFraction 2 Over 5 EndFraction
 StartFraction 5 Over 5 EndFraction
 Three-halves