Which Statement Most Accurately Describes the State of Self-Report Measures

Which statement most accurately describes the state of self-report measures of courage?

A) Numerous psychometrically valid measures of courage have been developed, all of which have empirical support.
B) No self-report measures of courage have been developed.
C) The only measure of courage is the Values in Action scale developed by Peterson and Seligman.
D) The development of measures of courage is in its early stages because of the lack of a comprehensive theory of courage.