What exception is thrown if DriverManager method getConnection cannot connect to the database?

Investigators validate forensic software to be used by testing the software at the extremes and being familiarized with its capabilities

Indicate whether the statement is true or false.

Which of the following statements are correct?

a. A reference variable is an object. b. A reference variable references to an object. c. A data field in a class must be of a primitive type. d. A data field in a class can be of an object type.