A software company is launching a new productivity app and wants to gauge user satisfaction to identify areas for improvement. To efficiently gather information, the company decides to survey a random sample of $1,000$ users who downloaded the app, aiming for a diverse representation of user demographics and usage patterns. $70\%$ of the$1,000$ users surveyed expressed satisfaction with the app's features and functionality.

Question $3$ of $112$ Points

Identify the variable of interest in this problem and indicate if it is categorical or quantitative.

A$.$ Variable $=$ the number of users who said they were satisfied with the app's features and functionality. The variable is quantitative.

B$.$ Variable $=$ whether or not a user was satisfied with the app's features and functionality. The variable is categorical.

C$.$ Variable $=$ percentage of users who were satisfied with the app's features and functionality. The variable is quantitative.

D$.$ Variable $=$ whether or not a person downloaded the app. The variable is categorical.