What is the oflag used to open a file in mode read + write?O_WRONLYO_RDONLYO_RDWR

What is the correct combination of oflags used to open a file with the mode write only and create it if it doesn’t exist?O_RDWR | O_CREATO_WRONLY | O_CREATO_WRONLY | O_CREAT | O_EXCLO_WRONLY

Which of the following mode opens file for reading?Select one:a+wra

Which mode is used in the open() function to write data to a file in Python?

In character stream I/O, a single read/write operationperforms _____.*1 pointTwo bytes read/write at a time.Eight bytes read/write at a time.Five bytes read/ write at a time.None of the above

Explain read modify write feature.