QUESTION 4 (30 MARKS, 36 MINUTES) You are investigating the relationship between dividends (div) and price (price) for your honours thesis (both variables are measured in natural logs). Your dataset consists of quarterly data which extends from 1957Q2 to 2017Q4. You have found that both these series are I(1). You obtain the results shown in Figures 4.1-4.4. Answer the following questions: a) Whilst discussing the results of the output with your friend, Sipho, you tell him that Figure 4.1 represents a spurious regression, whilst he says it does not. Who is correct, and why