A radio can tune over the frequency range of a portion of MW broadcast band (800 kHz to 1200 kHz) If its LC circuit has an effective inductance of $200\;\mu H$, What must be the range of its variable capacitor ?

Question

$\begin{array}{1 1} 197.7\;pF;87.8\;pF \\ 19.77\;pF;8.78\;pF \\ 197.7\;pF;8.78\;pF \\ 19.77\;pF;87.8\;pF\end{array} $