Examine Tamika's work below. What is Tamika's error? 18a^-5b^-6/30a^3b^-5=3a^-2b^-11/5
=3/5a^2b^11
A. She added the exponents
B. She simplified the coefficients incorrectly.
C. She divided the exponents.
D. She moved bases with positive exponents.