What will TSR Caller Return?

With reference to the multitasking program” TSR Caller” writes against each instruction what
they do. (Marks 3)
MOVE al, [chars+bx]
Move [es: 40], al
INC bx

MOVE al, [chars+bx]
It will read next character from the declared variable char.
Move [es: 40], al
Answer: It will print the data at the specified place
INC bx
Answer: It will increment the register bx by 1