What characteristic of blank verse can you find in this line?

“To know my deed, 'twere best not know myself.”
A. The pause in the middle creates the singsong rhythm of poetry.

B. The stress pattern is irregular and ends with a two-syllable word.

C. The use of old-fashioned language makes it sound classical.

D. It has ten syllables, with a stress falling on every second syllable

Question

What characteristic of blank verse can you find in this line? 

“To know my deed, 'twere best not know myself.” 
 A. The pause in the middle creates the singsong rhythm of poetry.  
 
 B. The stress pattern is irregular and ends with a two-syllable word.  
 
 C. The use of old-fashioned language makes it sound classical.  
 
 D. It has ten syllables, with a stress falling on every second syllable