this question has four sections, A$,$ B$,$ C$,$ & D$.$ Please answer each of the following sections separately. In other words, please present your answer for A separately, B separately, and so on$.$Please be comprehensive yet precise in your answers. If required, please use bullet points in answering each of the four sections.o A$.$ Please specify two types of Errors that occur when the researcher is undertaking Marketing Research in the sense of which is chance error and which is unavoidhble B$.$ Please present any two examples of Non$-$Sampling Error C$.$ Please specify whether Non$-$Sampling Errors occur even when undertaking census. Why is that the case? D$.$ Can Random Sampling Errors cause bias? Please specify what can be done to reduce the level of random errors that will occur in a Marketing Rescarth study