You are developing a C# application that has a requirement to validate some string input data by using the
Regex class.
The application includes a method named ContainsHyperlink. The ContainsHyperlink()method
will verify the presence of a URI and surrounding markup.
The following code segment defines the ContainsHyperlink()method. (Line numbers are included for
reference only.)

The expression patterns used for each validation function are constant.
You need to ensure that the expression syntax is evaluated only once when the Regex object is initially
instantiated.
Which code segment should you insert at line 04?

Correct Answer: D
Explanation/Reference:
Explanation:
RegexOptions.Compiled - Specifies that the regular expression is compiled to an assembly. This yields
faster execution but increases startup time. This value should not be assigned to the Options property
when calling the CompileToAssembly method.
References:
http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regexoptions.aspx
http://stackoverflow.com/questions/513412/how-does-regexoptions-compiled-work