Select the figure that can replace the question mark (?) in the following series.

Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 
The arrow is moving in clockwise direction in all the figures.
The arrow is moving down to up and up to down and so on.
From first to second figure, the main figure which is triangle is inverted.
Letters are increaing by +3, +4, + 5, and +6.
The sides of the main figure is increaising by one side.