Sa Co purchased 70% of the ordinary shares of Pa Co for a cash consideration of $300million on January 1, 2017. The identifiable net assets of Pa at this date had a carrying valueof $200 million and a fair value of $280 million. The NCI at acquisition was measured at fairvalue of $120 million. What would the goodwill calculation be at acquisition date ofJanuary 1, 2017? If a year later, goodwill was found to be impaired by $50 million, explainhow this impairment will be dealt with and allocated