The figures I, II, and III are parts of a sequence. Which one of the following options comes next in the sequence at IV?





The pattern involves the shaded area rotating clockwise by a quarter turn each step.
Step 1: In Figure I, the top left quarter is shaded.
Step 2: In Figure II, the bottom left quarter is shaded.
Step 3: In Figure III, the bottom right quarter is shaded.
Step 4: Following this pattern, the next figure should have the top right quarter shaded, but as per the provided options, the closest match under a clockwise movement is the left quarter shaded for a continuation of the sequence in a new cycle.
Therefore, the correct answer, aligning with a continuous cycle of the sequence, is that the left quarter should be shaded in the next figure.
Which letter replaces the question mark? A, D, G, J, M, ?