C#, JSON, DocumentDB, and Reflection?

When I serialize my JSON object out of DocumentDB, my Control is not serializing into the OptionsControl with the Options property.

I have the following class, Control:

public class Control : IControl
{
    public Guid Id { get; set; }

    public virtual Enums.ControlType Type { get; set; }

    public string PropertyName { get; set; }

    public string ControlCssClass { get; set; }

    public string Description { get; set; }
}

I also have OptionsControl, which inherits from Control:

public class OptionsControl : Control
{
    public IDictionary<string, string> Options;
}

I used the Document Explorer in Azure to put this JSON in document in a DocumentDB collection:

Rows:
[
    {
        Controls:
        [
            {
              "PropertyName": "Relationship",
              "ControlCssClass": "",
              "Description": "",
              "Type": 3,
              "Options": [
                  {
                    "Key": "Spouse",
                    "Value": "Spouse"
                  },
                  {
                    "Key": "Child",
                    "Value": "Child"
                  },
                  {
                    "Key": "Step-child",
                    "Value": "Step-child"
                  }
              ],
           }
        ]
    }
]

When I pull the data out of DocumentDB, I attempt to serialize it into my Row class:

public class Row
{
    public IList<Control> Controls { get; set; }
}

And of course, since I'm serializing into Control, I get all of the properties on the Control except for Options. What do I need to do so that the JSON object from DocumentDB serializes properly and turns into an OptionsControl (has the Options property) instead of just the base Control?