Find the sum of all the solutions of ∣2cosx∣=1|2\cos x|=1∣2cosx∣=1 in the range 0≤x≤2π0\leq x\leq2\pi0≤x≤2π. A3π3\pi3πB4π4\pi4πC5π5\pi5πD6π6\pi6πE7π7\pi7πF8π8\pi8π