arr = np.arange(20). How would you slice it to get every 4th element in reverse order starting from the last element?arr = np.arange(20) creates array from 0 to 19. We want every 4th element backward starting from last element (index 19).arr[19::-4] starts at index 19, goes backward to start (index 0), stepping by 4, which matches the goal.arr[::4] every 4th forward [0,4,8,...], wrong direction. C: arr[19:0:4] positive step with start>stop gives empty. D: arr[0:19:-4] start<stop with negative step gives empty.15+ quiz questions · All difficulty levels · Free
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