The Mercury Column in an Ordinary Medical Thermometer Doubles in Length

The mercury column in an ordinary medical thermometer doubles in length when its temperature changes from 95 $\degree$ F to 105 $\degree$ F. Choose the correct statement:

A) the coefficient of volume expansion of mercury is 0.1 per F $\degree$
B) the coefficient of volume expansion of mercury is 0.3 per F $\degree$
C) the coefficient of volume expansion of mercury is (0.1/3) per F $\degree$
D) the vacuum above the column helps to "pull up" the mercury this large amount
E) none of the above is true