While finding the mass of an unknown substance using a triple beam balance, Raquel forgets to subtract the mass of the pan holding the substance from her measurement. What kind of error will this likely produce in her results?
A. They will be less precise, but just as accurate.
B. They will be less accurate, but just as precise.
C. They will be both less precise and less accurate.
D. They will be incorrect, but neither the precision nor the accuracy will be affected.