When debugging a program with pwngdb, What is the significance of the 's' in the 'x/s 0x80484ef' command shown below?
1) Tells the command to step into the address 0x80484ef
2) Identifies the output format for data at address 0x80484ef
3) Tells the command to stop after the address 0x80484ef
4) Identifies the next breakpoint is address 0x80484ef