Three artefacts produce by scrum are product backlog, error backlog and increment product backlog, sprint backlog and increment product backlog, error backlog and risk product backlog, sprint backlog and risk State whether the following statement is TRUE or FALSE An ratio scale (cardinal scale without meaningful zero) is a quantitative scale where differences between two values are a meaningful concept but not their ratio (e.g. value a is twice as large as value b) or, put differently, there is no meaningful zero value in the scale True False RAD may not be appropriate when Maintenance is absent Technical risks are high Technical risks are low Deployment is present