What are the differences between simulation tools and synthesis tool?

• A. Simulators are used to check the performance of circuit and Synthesis tools are for the fabrication of circuits
• B. Simulators and Synthesis tools works exactly same
• C. Simulators are used just to check basic functionality of the circuit and Synthesis tools includes timing constraints and other factors along with simulation
• D. Simulation finds the error in the code and Synthesis tool corrects the code