Question: Which of the commercials on which Rodney Saulsberry worked is a chocolate bar made by Mars, Inc?

Context paragraphs:
Rodney Saulsberry: Rodney Jerome Saulsberry (born July 11, 1956) is an American voice-over performer, actor, vocalist, announcer and author, known for his voice work on commercials (Twix, Zatarain's), his three books ("You Can Bank on Your Voice", "Step Up to the Mic" and "Rodney Saulsberry's Tongue Twisters and Vocal Warm-Ups" and the voice of Joseph Robbie Robertson on the animated TV series "Spider-Man".

Galaxy Bubbles: Galaxy Bubbles is a chocolate bar made by Mars similar to a Cadburys Wispa or Nestlé Aero and was introduced in early 2010.  The chocolate is like an ordinary Galaxy which has been aerated.  Mars now produce orange versions of this product.

Fry's Chocolate Cream: Fry's Chocolate Cream is a chocolate bar made by Cadbury's, and formerly by J. S. Fry & Sons in Union Street, Bristol, England.  Fry's Chocolate Cream was one of the first chocolate bars ever produced, launched in 1866.  Like the first chocolate bars, they are dairy-free and vegan.  It consists of a fondant centre enrobed in dark chocolate (with a minty taste) and is available in a plain version, and also peppermint Fondant

Twix: Twix is a chocolate bar made by Mars, Inc., consisting of biscuit applied with other confectionery toppings and coatings (most frequently caramel and milk chocolate).  Twix bars are packaged with two or four bars in a package.  Miniature and bite-size Twix are also available.

Galaxy Honeycomb Crisp: Galaxy Honeycomb Crisp is a chocolate bar made by Mars that contains small granular nougats of honeycomb toffee, as part of the Galaxy chocolate range.

Mirage (chocolate): The Mirage chocolate bar is a milk chocolate bar filled with bubbles of air, made by Nestlé and primarily sold in Canada.  It is a long chocolate bar with a trapezoidal shape, filled with bubbles.  It is often found in a yellow-white wrapper.  The chocolate bar is made by Nestlé Canada.  It is manufactured in a peanut-free facility.  The Mirage is in many ways similar to the Aero bar, also made by Nestlé.  However, the Mirage is quite a bit thicker than the Aero bar, and is not segmented or divided into pieces.

Hershey bar: The Hershey's Milk Chocolate Bar (commonly called the Hershey's Bar) is the flagship chocolate bar manufactured by the Hershey Company.  It is often referred by Hershey as "The Great American Chocolate Bar."  The Hershey Milk Chocolate Bar was first sold in 1900, followed by the Hershey's Milk Chocolate with Almonds variety, which began production in 1908.

Snickers: Snickers is a brand name chocolate bar made by the American company Mars, Incorporated.  Consisting of nougat topped with caramel and peanuts, enrobed in milk chocolate, Snickers has annual global sales of $2 billion.

3 Musketeers (chocolate bar): 3 Musketeers is a candy bar made in the United States and Canada by Mars, Incorporated.  It is a chocolate-covered fluffy whipped chocolate bar.  The 3 Musketeers Bar was the third brand produced and manufactured by M&M/Mars, introduced in 1932.  Originally, it had three pieces in one package, flavored chocolate, strawberry and vanilla; hence the name, which was derived from the novel "The Three Musketeers".  Rising costs and wartime restrictions on sugar saw the phasing out of the vanilla and strawberry pieces to leave only the more popular chocolate.  Costing five cents when it was introduced, it was marketed as one of the largest chocolate bars available, one that could be shared by friends.

Cherry Ripe (chocolate bar): Cherry Ripe is a brand of chocolate bar manufactured by Cadbury Australia.  Introduced by the Australian confectioner MacRobertson's in 1924, it is now Australia's oldest chocolate bar and is one of the top chocolate bar brands sold in the country.  It consists of cherries and coconut coated with dark chocolate.

Supporting paragraphs: Rodney Saulsberry Twix
Answer: Twix