The function f(x) is defined by f(x)=2x. The function g is an increasing linear function. When graphed in the xy-plane, f and g intersect at points (a,c) and (b,d), with c<d. When g(x)>f(x), which must be true?
A
x<a or x>b
B
a<x<b
C
x<a
D
x>b
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