Which Is the Correct Order of Steps to Perform the Modified

Which is the correct order of steps to perform the modified Allen test?
1) Pressure is applied to both the radial and ulnar arteries.
2) The fist is opened but not fully extended.
3) Pressure on the ulnar artery is removed.
4) The hand is clenched into a tight fist
5) The palm and fingers are blanched.

A) 4,1,2,5,3
B) 4,5,1,3,2
C) 1,4,3,2,5
D) 4,2,1,3,5