A variable frequency a.c source is connected to a capacitor .How will the displacement current change with decrease in frequency ?

Question

$\begin{array}{1 1} \text{As conduction current decreases , frequency decreases } \\ \text{As conduction current increases , frequency decreases } \\ \text{There will be no charge} \\ \text{As conduction current decreases , frequency decreases initially and then increases }\end{array}$