What is the difference between RegisterClientScriptBlock, RegisterClientScriptInclude and RegisterClientScriptResource?

Following are the functions:

RegisterClientScriptBlock – The script is specified as a string parameter.

RegisterClientScriptInclude – By setting the source attribute to a URL that point to a script file.

RegisterClientScriptResource – specifies Resource name in an assembly. The source attribute is automatically populated with a URL by a call to an HTTP handler that retrieves the named script from the assembly.