Answer: B
Reason: A function definition expression is a kind of "function literal' just like as the object initializer is a kind of "object literal". The function definition expression (or we can say a function literal) consists of the keyword Function, followed by the set of identifiers(or parameters names) that are separated by commas inside the parenthesis, and a small block of JavaScript code(which we normally called function body/definition) enclosed in the curly braces.