While Creating a File on a Volume, the Linux Administrator

While creating a file on a volume, the Linux administrator receives the following message: No space left on device. Running the df -m command, the administrator notes there is still 50% of usage left. Which of the following is the NEXT step the administrator should take to analyze the issue without losing data?

A) Run the df -i command and notice the inode exhaustion Run the df -i command and notice the inode exhaustion
B) Run the df -h command and notice the space exhaustion df -h command and notice the space exhaustion
C) Run the df -B command and notice the block size df -B command and notice the block size
D) Run the df -k command and notice the storage exhaustion df -k command and notice the storage exhaustion