Which words in the sentence are the adverb phrase?

Before movable type and modern printing, careful scribes wrote each manuscript slowly.

A.
manuscript slowly

B.

Before movable type and modern printing

C.
careful scribes

D.
wrote each

Question

Which words in the sentence are the adverb phrase? 

Before movable type and modern printing, careful scribes wrote each manuscript slowly.

  

  A. 
  manuscript slowly   
   

 
 

  

  B. 
 
Before movable type and modern printing
   
   

 
 

  

  C. 
  careful scribes   
   

 
 

  

  D. 
  wrote each

anonymous · Answer

I think A. You might want to double check that.