Which of the following statements are true? You may need to select more than one answer.

All files are stored in binary format. So, all files are essentially binary files.

Text I/O is built upon binary I/O to provide a level of abstraction for character encoding and decoding.

Encoding and decoding are automatically performed by text I/O.

For binary input, you need to know exactly how data were written in order to read them in correct type and order.