jaslene147488 jaslene147488 26-10-2022 Mathematics Answered sara is trying to simplify the expression. One step in Sara's simplification could be which of the following? 2 -3a b + C. When a =2, b=7 C=-1 A -12(7)-1 B 36(7) -1 C -12 + 7 -1 D -3 (28) + 1