Pick the best replacements for $1$ and $2$ in the following sentence: When comparing compilers and interpreters, a compiler is like $1$ while an interpreter is like $2.$

$1=$ a process, $2=$a function

$1=$ translating an entire book, $2=$ translating a line at a time

$1=$ software, $2=$ hardware

$1=$ object code, $2=$ byte code