15. Let R = 1.5 Ω, L = 2.2 mH and C = 1.8 μF in this circuit. After the capacitor is fully charged by the battery, switch is thrown to position b. Roughly how many current oscillations will the resistor experience before the current dies out? (A) 1 (B) 500 (C) 1000 (D) 4.1 kW (E) none of the above.