Query and manipulate data by using the Entity Framework - ADO.NET

You need to execute the following SELECT query using the COUNT aggregate to determine the total record count in a table: SELECT COUNT(*) FROM ExamQuestions; Which of the following enables you to do that? (Choose all that apply)

The SqlCommand ExecuteScalar method
SqlDataAdapter in conjunction with a DataSet
SqlDataAdapter in conjunction with a SqlDataReader
SqlDataAdapter in conjunction with a DataTable