Procter & Gamble $($P&G$)$ decided to skip a generation of consumers when it began to market Old Spice deodorant. The target market consists of men aged $18$ to $34$ years old $($Generation Y$)$ who don't remember the Old Spice brand sold to their grandfathers $($pre baby boomer$)$ many years ago. P&G is using which type of segmentation variable?

behavioral

demographic

lifestyle

geographic

psychographic