What can you deduce from the following statement? (Select two answers) str= open ('file.txt', 'rt')

What can you deduce from the following statement? (Select two answers)
str= open ('file.txt', 'rt')

A. str is a string read in from the file named file.txt B. a newline character translation will be performed during the reads C. if file. txt does not exist, it will be created D. the opened file cannot be written with the use of the str variable