To prevent B class to instantiate an instance of A class, A. use the public modifier on the constructor in A class.
B. don't use any modifiers on the constructor in A class.
C. use the static modifier on the constructor in A class.
D. use the private modifier on the constructor in A class.
E. do not define any constructor in A class.

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.