Which sentence is correctly punctuated? A) Please let me know, if ...

[Mr.Thesaxman]

Which sentence is correctly punctuated?
 A) Please let me know, if you have any questions.
 B) Please let me know; if you have any questions.
 C) Please let me know if you have any questions.

Question 2

The statement Two of the three previous surveys showed that employees prefer Health Plan A uses
 A) the present tense to report data from the current study.
  B) the past tense to describe the findings of earlier research.
  C) the past tense, reflective of the writer's time.
  D) the present tense to describe the conclusion of the report.
  E) the past tense to describe the procedure of the surveys.

[deja]

Answer to Question 1

C

Answer to Question 2

B