badatmath181 badatmath181 04-01-2024 Mathematics contestada Differentiate f (x) = 6x³ − 7x² + 12x − 99. A. 18x² - 14x + 12 B. 18x² - 14x - 12 C. 18x³ - 14x² + 12x D. 18x³ - 14x² - 12x