3. When the denominator is less than one
$$\begin{array}{lcl} 0< x< 1\\ \\ Column\: A:\: \frac{1000}{x}\\ \\ Column\: B:\: 10^{3}\\ \\ (A):If\: the\: quantity\: in \: Column\: A\: is \: greater;\\ (B):If\: the \: quantity\: in \: Column \: B\: is \: greater;\\ (C):If\: the \: two\: quantities\: are\: equal;\\ (D):If\: the\: relationship\: cannot\: be\: determined\\ \, \, \, \, \, \, \, \, \, \, \, \: from\: the\: information\: given.\\ \end{array}$$