Which two code segments can you use to achieve this goal?

You are developing an application that includes a method named SendMessage.
You need to ensure that the SendMessage() method is called with the required parameters.
Which two code segments can you use to achieve this goal? (Each correct answer presents
a complete solution. Choose two.)

A.
Option A

B.
Option B

C.
Option C

D.
Option D

Explanation:
D: ExpandoObject
Represents an object whose members can be dynamically added and removed at run time.
/ The ExpandoObject class enables you to add and delete members of its instances at run
time and also to set and get values of these members. This class supports dynamic binding,
which enables you to use standard syntax like sampleObject.sampleMember instead of
more complex syntax like sampleObject.GetAttribute(“sampleMember”).
/ You can pass instances of the ExpandoObject class as parameters. Note that these
instances are treated as dynamic objects in C# and late-bound objects in Visual Basic. This
means that you do not have IntelliSense for object members and you do not receive
compiler errors when you call non-existent members. If you call a member that does not
exist, an exception occurs.
Note:
* Visual C# 2010 introduces a new type, dynamic. The type is a static type, but an object of
type dynamic bypasses static type checking. In most cases, it functions like it has type
object. At compile time, an element that is typed as dynamic is assumed to support any
operation. Therefore, you do not have to be concerned about whether the object gets its
value from a COM API, from a dynamic language such as IronPython, from the HTML
Document Object Model (DOM), from reflection, or from somewhere else in the program.
However, if the code is not valid, errors are caught at run time.