Can you add the reference of a Class library project in a Silverlight application project?

Which of the discrepancies are found in the below code:

Which is the correct description of a sealed class in the .NET Framework for Silverlight?

What is the functions of Common Type System in the .NET Framework for Silverlight?

What is the function of the InnerException property of the "Exception" class?

This property is an IDictionary that can hold arbitrary data in key-value pairs.

Which option helps your Silverlight applications run faster, smoothly?

How can you protect your Silverlight client application against malicious services?

The Profiling API can retrieve information about actions and events occurring in the CLR. Which of the following actions/events can it retrieve?

Which is INCORRECT with regard to the use of Silverlight brush objects to paint an area with Linear Gradient?

Which is NOT a feature of Silverlight?