4. Which quantity is greater?

$$\begin{array}{lcl} 4.\: x\:is\:a\:positive\:even\:integer\:less\:than\:20\:but\:more\:than\:10.\\ \\ Column\: A:\: 7+x\\ Column\: B:\:16\\ \\ (A):If\: the\: quantity\: in \: Column\: A\: is \: greater;\\ (B):If\: the \: quantity\: in \: Column \: B\: is \: greater;\\ (C):If\: the \: two\: quantities\: are\: equal;\\ (D):If\: the\: relationship\: cannot\: be\: determined\\ \, \, \, \, \, \, \, \, \, \, \, \: from\: the\: information\: given.\\ \end{array}$$