Write the next sentence in the following story.

How to use facebook places
Get the necessary gear.
As of august 2010, you can use places on :
The newest version of the facebook iphone or ipod touch app. The mobile web app at http: // touch. Facebook.com.

Choose from: a). This requires a html5 compatible browser (e.g. new versions of safari, firefox or chrome) and a device capable of supporting geolocation.; b). The american flag app at https: // www.pavate.com. The uber mobile phone platform at https: // www.americanbar.com /.; c). The app store at http: // www.apple.com/location. The android app at http: // paralproduceation.; d). The google play store app at https: // elove.com/apps/chrome/new-app /. You can also download places from the google play store, this application is the first version of facebook places Apply the appropriate settings.;. The answer should be
a).