[Modify] Answer Correction

practice-exam/practice-exam-16.md

@@ -123,7 +123,7 @@ 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: A
+    Correct Answer: C
 
     Explanation: <https://docs.amazonaws.cn/en_us/AmazonRDS/latest/UserGuide/rds-ug.pdf>
 
@@ -492,7 +492,7 @@ 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: AC
+    Correct Answer: A
 
     Explanation: <https://data-flair.training/blogs/aws-advantages/>
 

practice-exam/practice-exam-17.md

@@ -723,10 +723,9 @@ 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: CD
+    Correct Answer: AC
 
     Explanation:
-    - <https://aws.amazon.com/comprehend/features/>
     - <https://aws.amazon.com/cloudfront/>
 
     </details>