6.  A series RC circuit is connected to a...

6.  A series RC circuit is connected to a DC voltage source at time t = 0. The relation between the   source voltage VS, the resistance R, the capacitance C, and the current i(t) is given below:

\(V_e=Ri(t)+{1\over c}\int^1_0i(u)du\)

Which one of the following represents the current f(t)?

(A)

(B)

(C)

(D)

Hint: 

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