What is the relationship between total surplus and economic efficiency?

When total surplus gets maximized, then economy meet economic efficiency.

Explanation:

Economic efficiency is described as a thinking that there is one possible way to make situation better by imposing a cost on another.

Total surplus is described as the sum of producer and consumer surplus.

It gets maximized in a perfect competition (hit free-market equilibrium).

i.e. It gets maximized when both consumer and producer surplus is maximum, and then the economy meet economic efficiency.

answer; /// the above statement is (true);