Digital Electronics

An \alpha particle is scattered from an Au target at rest as shown in the figure. D1 and D2 are the detectors to detect the scattered \alpha particle at an angle 𝜃 and along the beam direction, respectively, as shown. The signals from D1 and D2 are converted to logic signals and fed to logic gates . When a particle is detected, the signal is 1 and is 0 otherwise. Which one of the following circuits detects the particle scattered at the angle 𝜃 only? (A) (B) (C) (D)