39 RLC 並聯諧振電路以弦波電流源 iS = 10 sin(103t+60°) mA 來驅動、R = 2 kΩ、L = 10 mH、C = 0.1 mF，該電阻所跨電壓 vO 與輸入電流 iS 間相位角差為多少度？
(A) 0
(B) 30
(C) 60
(D) 90