[单选题]
If a 1000-W resistor is connej:nujn0/a t7j kqd(3f cted in seriesngo4f t)gbou-vn;( s7di8,yh no e(p/ with a 20-mH inductor, what is the pha (oo(shev8gd g4uoyi;b t )/nn7, f-pnse angle at 1000 Hz?
A. $2.9^{\circ}$
B. $7.2^{\circ}$
C. $45^{\circ}$
D. $90^{\circ}$
