MVC 4 best helper for custom checkbox value list

Question

In Company model, I have:

[Display(Name = "Offered Services")]
public string[] Services { get; set; }

and I have a standard scaffold controller.

Now, in Razor view I need to use the checkbox helper which auto binds the values to model such that the following markup is generated for browser:

<div class="editor-label">
    Offered Services
</div>
<div class="editor-field">

    <input type="checkbox" name="Services[]" id="services-safety" value="safety"  />
    <label for="services-safety">Safety</label>

    <input type="checkbox" name="Services[]" id="services-healthy" value="healthy"  />
    <label for="services-healty">Healthy</label>

    ... <!-- more checkboxes in future -->
</div>

Questions:

• Is there any helper which binds it to model so the selected values are stay checked in edit view. Would it be possible without using extra ViewModel and controller code?

• Is it a good idea to let the presenter change the behavior of application? If someone change the checkbox value from client-side, then Service array will contain garbage data. In this case what is the best approach to deal with checkboxes to prevent it from such noise:

  1. ViewModel for polymorphic service names
  2. Enum Service {}
  3. Create separate properties for each service in Company model

  4. class Service{}: containing all services as properties:

     A) then make a property of the type Services in the model.

     B) Make Service as a entity and make association with Company.