Which word group best completes the sentence without introducing an inappropriate shift in tense?

While I was cleaning the bathroom,

A.
I somehow had been misplacing my toothbrush.

B.
I somehow was misplacing my toothbrush.

C.
I somehow misplace my toothbrush.

D.
I somehow misplaced my toothbrush.

Question

Which word group best completes the sentence without introducing an inappropriate shift in tense? 

While I was cleaning the bathroom,
	
	
 
A.
	I somehow had been misplacing my toothbrush.
	
 
B.
	I somehow was misplacing my toothbrush.
	
 
C.
	I somehow misplace my toothbrush.
	
 
D.
	I somehow misplaced my toothbrush.

anonymous · Answer

D.
	I somehow misplaced my toothbrush.

anonymous · Answer

Thanks