A self-driving or an autonomous car is a car that uses a combination of sensors and artificial intelligence (AI) to move safely between destinations with little or no human input. Which one of the following variable types about autonomous vehicle is incorrect?

• A. The number of sensors installed on each self-driving car is a quantitative discrete variable.
• B. Type or name of specialty of each business in the self-driving car market (e.g., engineering, software development and data science) is a qualitative nominal variable.
• C. The production capacity of a manufacture (i.e., number of cars a manufacturer can produce) is a quantitative discrete variable.
• D. The cost of production of each car in Rands is a quantitative continuous variable.
• E. The type or name or object identified by the car (e.g., traffic light, road sign, tree pedestrian, etc.) is a qualitative ordinal variable.