Consider the following code segment, which uses the variables r, s, and t.
  r ← 1
   s ← 2
   t ← 3
   r ← s
   s ← t
   DISPLAY (r)
   DISPLAY (s)

 What is displayed as a result of running the code segment?
(A)1 1 (B)1 2 (C)2 3 (D)3 2
C