Which of the following is TRUE? Group of answer choices a, A buffer is most resistant to pH change when [acid] = [conjugate base] b. An effective buffer has very small absolute concentrations of acid and conjugate base. c. None of the above are true. d. A buffer can not be destroyed by adding too much strong base. e. It can only be destroyed by adding too much strong acid. f. An effective buffer has a [base]/[acid] ratio in the range of 10 - 100.