With more than 32 million smart phones in the United Kingdom alone, the number of mobile phone applications or apps is rapidly increasing. These apps are used for gaming, travel, shopping, and banking and soon the department of health will be encouraging the development of medical apps to help manage medical conditions. Potentially popular apps could include blood pressure monitors, blood sugar monitors and contraceptive choice apps. These apps could make managing disease far more convenient and efficient, improving the quality of life for millions in the UK.

Question: Heart rate monitor is listed as a potential popular app
Options:
A. true, B. false, C. uncertain
Answer: "C"