When Working the Problems at the End of Each Chapter,you

Multiple Choice

When working the problems at the end of each chapter,you should

A) always look at the answers in the back of the book first.
B) never look at the answers in the back of the book.
C) use a computer program such as SPSS to check all your answers.
D) really try to solve each problem and then look at the answer in the back of the book.