How do the following headlines concern self$-$interest and the social interest?

Whole Foods, a U$.$S$.$ supermarket, is opening in Britain while Starbucks is expanding in Asia.

All automobiles must be fitted with seat belts.

A$.$ Whole Foods makes decisions in its self$-$interest, but Starbucks takes the social interest into account. Seat belts infringe individual choice and are against both self$-$interest and the social interest.

B$.$ Whole Foods and Starbucks make decisions in the social$-$interest. Seat belts are in people's self$-$interest.

C$.$ Whole Foods and Starbucks make decisions in their self$-$interest. Seat belts are in the social interest, but people decide whether to wear them in their self$-$interest.

D$.$ Whole Foods makes decisions in the social interest, but Starbucks thinks only of its self$-$interest. Seat belts are in the social interest only if people behave in the social interest.