What is the minimum input required to perform a computational chemistry calculation? A. The number of types of atoms in the system B. An initial molecular geometry C. The charge D. The multiplicity of the system E. The level of theory to be applied (method and basis set) F. The empirical formula of the system G. The molecular formula of the system a. A, B, C, D b. B,C,D,E c. A,F,G d. B,C,D,F