Clearing Skies Press Published a Book by Robert Ruark Entitled

Clearing Skies Press published a book by Robert Ruark entitled Keeping the Baby Alive Till Your Wife Gets Home.It is an advice book for new fathers.
-Refer to Clearing Skies Press.What demographic variables have been used to define the market for this book?

A) benefit desired and lifestyle
B) gender and family life-cycle stage
C) age,gender,and personality
D) benefit desired and gender