a. Which of the following statements are TRUE? check all that apply:

-Before a file can be processed for reading or writing, it must be open by the programmer.

-After processing a file, the file should be closed

-When a piece of data is written to a file, it is copied from a variable in RAM to the file.

-Sequential file access means that you have to read data from the beginning of the file before reading data stored at the end.

-In Python, the first argument to function open specifies the mode in which the file will be opened.

b. Which of the following statements are TRUE? check all that apply:

-When opening a file for writing using the 'w' mode, the new file gets to be created on the disk.

-When opening a file for writing using the 'a' mode, the new file erases the old file.

-When a file is open for reading, its read position is set to the beginning of the file.

-When a file is open for reading, a special value known as a read position is internally maintained for that file.

-A file read position is updated each time an item is read from that file