Two Capacitors,C₁ and C₂,are Connected in Series Across a Source

Multiple Choice

Two capacitors,C₁ and C₂,are connected in series across a source of potential difference.With the potential source still connected,a dielectric is now inserted between the plates of capacitor C₁.What happens to the charge on capacitor C₂?

A) The charge on C₂ increases.
B) The charge on C₂ decreases.
C) The charge on C₂ remains the same.