If a year is displayed as -2018- using a custom number format, the format used would be ________

The difference between a web app and a mobile app is that the program code for Web apps _________, whereas mobile apps are stored on the handheld device, so they have to be ___________.

A. arrives only when you use the app, downloaded and installed B. is downloaded and installed, retrieved from the cloud C. is downloaded and installed, retrieved only when you use the app D. none of the above

Fill in the code to complete the following function for computing factorial.

``` /** Return the factorial for a specified index */ long factorial(int n) { if (n == 0) // Base case return 1; else return _____________; // Recursive call } ``` A. factorial(n - 1) * n B. n C. n * factorial(n - 1) D. n * (n - 1)