When evaluating biometric devices, what is another term used to describe the equal error rate?

A crosstab query has at least one of each of the following EXCEPT ________

A) a row heading B) a summary field C) a totals row D) a column heading

An explicit constructor:

a. Cannot be called outside of the class it is declared in. b. Can be implicitly called by the compiler to perform a data type conversion. c. Does not initialize its class’s data members. d. Must take exactly one argument.