Detailed Answer
Correct answer: (B)
1990
Because older workers are usually expensive, firms often induce early retirement through incentives, such as cash payments, benefit extension, and so on. To protect older workers from potential abuse and to prevent circumvention of ADEA anti-discrimination protections, in 1990, Congress passed the Older Workers Benefit Protection Act (OWBPA). Under OWBPA provisions, employers may offer retirement incentives as long as they are fully explained and assurances are given that a more favorable plan will be forthcoming.