Which of the Following Is FALSE

Which of the following is FALSE?

A) Content validity is most directly concerned with the question of what the instrument is measuring,i.e. ,what construct underlies its performance.
B) Construct validity cannot truly be established without evidence of convergent and discriminant validity.
C) The content validity of a measure focuses on the adequacy with which the domain of the characteristic is captured by the measure.
D) Both a and b.
E) a,b,and c.