Which of the following can be used to format text into columns?

________ validation works very similar to decimal validation except the value entered must be a date that satisfies the specified criteria

Fill in the blank(s) with the appropriate word(s).

Developing an ADT means that the user of your class does not have to know the details about how the class is implemented. This is known as

a. interface b. implementation c. testing and debugging d. information hiding