An Uncharged 5 $\varOmega$ B)60 $\varOmega$ C)80 × 10⁵ $\varOmega$ D)80 × 10⁷ $\varOmega$

An uncharged 5.0-µF capacitor and a resistor are connected in series to a 12-V battery and an open switch to form a simple RC circuit. The switch is closed at t = 0 s. The time constant of the circuit is 4.0 s.
-Determine the value of the resistance R.

A) 15 $\varOmega$
B) 60 $\varOmega$
C) 8.0 × 10⁵ $\varOmega$
D) 8.0 × 10⁷ $\varOmega$
E) 8.0 × 10⁸ $\varOmega$