【Analysis】According to the unit digit of the sum being 9, we can get: $B+D=9$, then $A+C=22-9=13$, so we can get $x=1, y=3$, from which we can find the value of $x+y$.

【Solution】Solution: According to the analysis of the problem, we get: $B+D=9$, then $A+C=22-9=13$, so we can get $x=1, y=3$, then $x+y=1+3=4$. Therefore, the answer is: B.
1. (3 points) In the two-digit addition operation shown in the figure, it is known that $A+B+C+D=22$, then $X+Y=$ ( )
A. 2
B. 4
C. 7
D. 13