Zierer GmbH Is a German Company That Builds and Markets

Zierer GmbH is a German company that builds and markets amusement park rides. The company specializes in "custom themed attractions using standard ride systems with unique vehicles and/or decorations created specifically for the customer." Zierer is not the only company that sells amusement park rides. Which element of the promotional mix would you expect Zierer to depend upon most heavily?

A) broadcast media
B) sales promotions
C) personal selling
D) public relations
E) Internet advertising