Use the observation in the first column to answer the question in the second column.

$\backslash$table$[[$observation$,$question$],[\backslash$table$[[$The enthalpy of vaporization$],[$of Substance A is bigger than$],[$that of Substance B$.]],\backslash$table$[[$At any temperature where both substances are liquid, which$],[$has the higher vapor pressure?$],[$Substance A$],[$Substance B$],[$Neither$,$ A and B have the same vapor pressure.$],[$It$\text{'}$s impossible to know without more information.$]]],[\backslash$table$[[$At $-7C,$ Substance $C$ has$],[$a vapor pressure of$],[103.$ torr and Substance $D$