The correct answer is A.
OBJ-1.3: Most Linux distributions use some version of the ext file system to format partitions on mass storage devices. ext3 is a 64-bit file system with support for journaling, which means that the file system tracks changes, giving better reliability and less chance of file corruption in the event of crashes or power outages. Journaling support is the main difference between ext3 and its predecessor (ext2). ext4 delivers significantly better performance than ext3 and would usually represent the best choice for new systems.