The correct answer is B) Both systems have mayors who do not have much power.
The way in that the commission system and council-manager system are similar is "Both systems have mayors who do not have much power."
We are talking about two forms of municipal government.
The Commission system is a form of local government in which people elect a small number of members that form the legislative body. Among their many functions, they have to collect taxes, and responsible for appropriations and ordinances. Under this form of government, functions of the executive and legislative are combined.
In the council-manager system, elected officials form a council and then hire an expert manager to run the operations of the local government. This results in a powerful combination of political experience of the elected officials with the managerial skills of the manager.