:2. Here are two statements about measurement error.
 
 	
 A.  bias is a kind of chance error. 

 	
 B.  chance error is a kind of bias. 

Then

 a.  Statements A and B are both true
 b.  Statements A and B are both false
 c.  Statement A is true but statement B is false
 d.  Statement B is true but statement A is false