Enter the correct 4 digit code ( no spaces)

Answer: 5934
Step-by-step explanation:
To find A, add 3+2=5
To find B use the calculated 5 to get 5+4 =9
To find C do the reverse of adding: Subtract 4-1=3 Rewrite as 1+3=4
To find D do the reverse of adding: Subtract 9-5=4 Rewrite as 4+5=9