Secants PB and PD are drawn from point P having an angle between them equal to 40°. The secant intersects a circle at points C, B, D and A. C is along the secant PB while A is along the secant PD with Cand A nearer to P. The angle PBA is 30". If AB is a diameter of a circle, find the angle ACD. Select one: О а. 30° O b. 26° O c. 20° O d. 32°

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