diff --git a/practice-exam/practice-exam-18.md b/practice-exam/practice-exam-18.md
index 24cf9f1..fcfdbec 100644
--- a/practice-exam/practice-exam-18.md
+++ b/practice-exam/practice-exam-18.md
@@ -14,7 +14,7 @@ If this practice exam has been helpful to you please share it with others and re
 
     <details markdown=1><summary markdown="span">Answer</summary>
 
-    Correct Answer: B
+    Correct Answer: C
 
     Explanation: <https://aws.amazon.com/compliance/shared-responsibility-model/>