Which figure should replace the question mark (?) if the following series were to be continued?

Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e.
.
From figure 1 to 2 and figure 3 to 4:
Top 2 corner letters are interchanging their position and the remaining 4 letters are shifting their position in a clockwise direction.
From figure 3 to 4 and figure 5 to 6:
Top-left and middle-top letters are interchanging their position and the remaining 4 letters are shifting their position in a clockwise direction.
