I will buy a drum set if and only if I save my allowance. Determine the conditions that make the biconditional true. A. It is true if I buy a drum set and I save my allowance. It is true if I buy a drum set and I don’t save my allowance. B. It is true if I don't buy a drum set and I save my allowance. It is true if I don’t buy a drum set and I don't save my allowance.. C. It is true if I buy a drum set and I don’t save my allowance. It is true if I don’t buy a drum set and I don’t save my allowance. D. It is true if I buy a drum set and I save my allowance. It is true if I don’t buy a drum set and I don’t save my allowance.