What Is a Plausible Economic Explanation as to Why Braille

question 173

Multiple Choice

What is a plausible economic explanation as to why Braille "dots" are commonly found on drive-up automatic teller machines although blind customers likely will not use a drive-up automatic teller machine?

• A) Blind people must be able use such machines due to government regulations requiring such dots on the keys under the Americans with Disabilities Act.
• B) The marginal cost of making two different types of keypads is substantial, and the benefit of providing keypads without the Braille dots is a mere inconvenience to ATM users.
• C) The marginal cost of making the keys with the Braille dots is less than making the keys without the Braille dots.
• D) There is no economic concept that explains why the keypads have Braille dots.