Q.3.4 Read the excerpt from a report by Eyewitness News below and then answer the question that follows:Adapted from a report by Reuters which appeared on EWN 3 months ago. JOHANNESBURG - Formally adding unemployment or economic growth to the South African central bank's mandate would risk policy mistakes and hurting its credibility, Governor Lesetja Kganyago said on Wednesday. The Reserve Bank (SARB) has long been under pressure to take more drastic measures to revive growth in Africa's most advanced economy, with calls for the bank to slash lending rates and finance government through quantitative easing (QE) "The problem is that formally adding an extra mandate, in the context of our propensity to stagflation, could encourage policy mistakes and weaken credibility," Kganyago said in a speech broadcast virtually by the University of Pretoria" https://ewn.co.za/2020/08/12/s-africa-s-economic-woes-bigger- than-monetary-policy-cenbank-governor [Accessed 24 March 2021], The excerpt above refers to one of the key functions of the South African Reserve Bank. Identify the main objective of the SARB in South Africa and briefly describe the four main functions