Which statement is true about asynchronous data validation?
A. Data in a field is immediately validated when a user moves off of the field.
B. Background validation is required to be active when a screen reader is being used.
C. To be used, asynchronous data validation must be enabled for all fields of an application.
D. To enable asynchronous data validation for all applications, add the statement ASYNCHRONOUS = `Y' to the PRESENTATIONXML file.
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