The development team recently moved a new application into production for the accounting department. after this occurred, the chief information officer (cio) was contacted by the head of accounting because the application is missing a key piece of functionality that is needed to complete the corporation's quarterly tax returns.
which of the following types of testing would prevent this from reoccurring?
(choose one and why)
a. security regression testing
b. user acceptance testing
c. input validation testing
d. static code testing