How Does a Researcher Demonstrate Concurrent Validity

How does a researcher demonstrate concurrent validity?

A) Some prespecified association must be established between the scores on the construct being validated and the scores on a dependent variable as determined by theory. The scores of both variables are obtained at approximately the same time and should be highly correlated.
B) The researcher assesses whether a construct performs as expected relative to other variables indentified as meaningful criteria.
C) Based on theory and experience, the researcher identifies another established construct that is claimed to measure the same concept as the one being validated and obtains scores on both constructs and computes the correlation between the scores.
D) Based on theory and experience, the researcher identifies a construct that is claimed to be different from the concept being validated and obtains scores on both scales and computes the correlation between the scores.
E) The researcher randomly divides the group of scale items in half and correlates the two sets of items.