Which type of stoichiometric calculation does not require the use of the molar mass?

The choices can be found elsewhere and as follows:

a. mass-mass problems

b. mass-volume problems

c. mass-particle problems

d. volume-volume problems

I believe the correct answer is option D. It is volume-volume problems that does not require the use of molar mass. Here you are dealing with molarities and volumes to determine concentrations. Molar mass is not part of any calculations.