Solutionunvalidated
using B::B; // this would work: — class DerivedB: public B. Tension: using B::B; // this does not work.
bd3f37c7-65a3-42b9-a171-7067814af7ee
using B::B; // this would work: — class DerivedB: public B. Tension: using B::B; // this does not work.