According to the lecture and reading, which of the following is an example of 'ghost' or 'shadow' work, or hidden labour that is performed by humans? Question 12Answer a. All of these are examples of ghost work. b. Delivery robots that are actually driven by remote workers. c. Crowd sourced labour, such as Amazon's Mechanical Turk. d. Facebook content moderation that seems automatic, but is performed by low wage workers. e. The production of data that is used to train AI