Question

A thesis statement should include

Answer 1

I think it's A. 
A thesis serves as a summary of your overall argument. 

Answer 2

A thesis statement should include A. a statement for all parts of an argument.

The objective of a thesis is to establish a focus and make a claim that you are going to develop in an essay. The argument you make in your essay must reflect your stance on a theme, and the statement that captures your position is the thesis statement. It should clarify the topic of your essay and what is your position in relation to it in order to guide your readers and also keep you focused.

It should not include a reason that supports a claim, or evidence such as details and relevant facts, since those are going to be developed in the body of the essay. Also, it should not include a counterclaim, since that is used to address any objections to your claim.