A developer recently released functionality to production that performs complex commission calculations in Apex code called from an Opportunity trigger. Users report that the calculations seem…

A developer recently released functionality to production that performs complex commission calculations in Apex code called from an Opportunity trigger. Users report that the calculations seem incorrect because the values they see for commissions are wrong. The developer has representative test data in their developer sandbox. Which three tools or techniques should the developer use to execute the code and pause it at key lines to visually inspect values of various Apex variables? (Choose two.)