Which sentence uses commas correctly?

A.
Are you familiar with the 15th Amendment or, do you know the 14th Amendment better?

B.
Gerald Ford was the 38th president of the United States, but he was not elected to that office.

C.
Ulysses S. Grant was born, in 1822 and he died at the age of 63 in 1885.

D.
Gerald Ford was vice president under Richard Nixon, but, he became president when Nixon resigned from office.

Question

Which sentence uses commas correctly?  
 
 

 
 

  

  A. 
  Are you familiar with the 15th Amendment or, do you know the 14th Amendment better?   
   

 
 

  

  B. 
  Gerald Ford was the 38th president of the United States, but he was not elected to that office.   
   

 
 

  

  C. 
  Ulysses S. Grant was born, in 1822 and he died at the age of 63 in 1885.   
   

 
 

  

  D. 
  Gerald Ford was vice president under Richard Nixon, but, he became president when Nixon resigned from office.

anonymous · Answer

You always use a comma before words like 'or' 'but' 'yet'. So it can't be A or D. And it won't be C, cause the comma comes before 'and'. That leaves B, which is right :)

anonymous · Answer

Thankyou :D