Please I need 1 line explanation as well for all the answers. Thanks

4. Medro was trying to remember what the worker's productivity in (sandwiches/day) is called. He told Mariana: "this is a multi- factor productivity." Mariana said: No, no, no Medro. This is a total productivity." O a. Medro is right a O b. Mariana is right c. neither is right d. not enough information to answer the question 5. Mariana & Medro's friend, Liliana, was visiting them one day. She told them the following: as long as your business is small, then the minimum you need to know about is: marketing, operations, finance, and accounting. Later on, as you grow larger and begin to hire staff, you will then need to know about human resource management, and you will need to build an information's system. But, if you build an information's system from now, it will be much better because you will be able to keep track of and organize all the data and information you think you will need to make more effective decisions. a. Liliana's advice makes sense b. Liliana does not know what she is talking about 6.(M&M)'s total productivity for the first 3 months was equal to 5. Medro and Mariana did not like this productivity. So, they improved their production system and increased the total productivity by 40%. What is the new improved total productivity equal to? O a. 40 O b. 2 O c. 15 O d. 7