input: Text: More Bang for the Buck A friend of mine offers a theory about why Bill Clinton's poll numbers stayed so high throughout the Lewinsky scandal: The news made it possible for serious-minded people to spend lots of time--at the office and over lunch--talking about semen stains, vaginal insertions, and blow jobs. And the people were grateful. That's probably because they're not getting all that much themselves. A recent University of Chicago survey of 10,000 adults found that Americans are having considerably less sex than was generally thought. Only one American in 20 has sex three times a week. One in five didn't score at all last year. If that's true, many of us could use a little sexual self-improvement. Not me, of course. I have been happily married for 26 years, since the age of 21. Deb and I have what seems to us to be a perfectly fine amorous life, yet everywhere I turn the culture tells me--almost mocks me-- you can do better! What would happen to our sex life then, if Deb (who participated in this story because she loves me and because she has tenure) and I tried for the first time to make something happen to it? And so it was that we found ourselves for the first time ever in a sex-toy store, A Touch of Romance, located near our home in Los Angeles, across the street from a Macy's. The idea behind shops like these is to make obtaining the materials of sexual experimentation as ordinary as purchasing plumbing supplies or housewares. Which sort of works--the only sexual thrill I got from the visit was knowing that Microsoft just bought a cock ring. Choosing it wasn't easy. Most of them came in presized sets of three. I couldn't figure out which would fit right and intuited that try-ons weren't an option. So I opted instead for an adjustable circumference
  Question: What is the writer's opinion of the instructional videos advertised in the New York Times Book Review?
  
   (A) They are unrealistic.
   (B) The only function of listing these videos was to increase the newspaper's third-quarter sales productivity.
   (C) They are overpriced.
   (D) Porn is more instructional.
  Answer:
output: Porn is more instructional.