Passage: In 1854 William Cooper founded an accountancy practice in London, which became Cooper Brothers seven years later when his three brothers joined.In 1898, Robert H. Montgomery, William M. Lybrand, Adam A. Ross Jr. and his brother T. Edward Ross formed Lybrand, Ross Brothers and Montgomery in the United States.In 1957 Cooper Brothers; Lybrand, Ross Bros & Montgomery and a Canadian firm McDonald, Currie and Co agreed to adopt the name Coopers & Lybrand in international practice. In 1973 the three member firms in the UK, US and Canada changed their names to Coopers & Lybrand. Then in 1980 Coopers & Lybrand expanded its expertise in insolvency substantially by acquiring Cork Gully, a leading firm in that field in the UK. In 1990 in certain countries including the UK, Coopers & Lybrand merged with Deloitte Haskins & Sells to become Coopers & Lybrand Deloitte: in 1992 they reverted to Coopers & Lybrand.

Question: What was the name of the company that changed their name to Coopers & Lybrand in 1992?
Coopers & Lybrand Deloitte