Is a Species That Lacks DNA Repair Mechanisms Likely to Have

Is a species that lacks DNA repair mechanisms likely to have more or fewer variations between individuals than a species that possesses repair mechanisms?

A) Fewer, because there are fewer ways to change the DNA.
B) Fewer, because the repair mechanisms introduce more variation into the DNA sequence.
C) More, because more spontaneous mutations will go uncorrected.
D) More, because without a repair mechanism, the cell's tumor suppressor genes are inactivated.