In a Sinusoidally Driven Series RLC Circuit, the Inductive Resistance $\Omega$

In a sinusoidally driven series RLC circuit, the inductive resistance is X_L = 200 $\Omega$ , the capacitive reactance is X_C = 100 $\Omega$ , and the resistance is R = 50 $\Omega$ .The current and applied emf would be in phase if:

A) the resistance is increased to 100 $\Omega$ , with no other changes
B) the resistance is increased to 200 $\Omega$ , with no other changes
C) the inductance is reduced to zero, with no other changes
D) the capacitance is doubled, with no other changes
E) the capacitance is halved, with no other changes