Answer
Please see the work below.
Work Step by Step
We know that if we increase the frequency, the resistance of the resistor will not change. The capacitive reactance is given as $X_C=\frac{1}{2\pi fC}$. As the reactance of the capacitor is inversely proportional to the frequency of the ac generator, hence the reactance of the capacitor decreases when the frequency is increased. The inductive reactance is given as $X_L=2\pi fL$. This equation shows that the reactance of the inductor increases when the frequency of the circuit is increased.
