Question: Which duo, who sold more than 28 million certified records worldwide from 1982 to 1986, had a certified Platinum single in the US?

<P0-S0> , first released as a single in the UK on 14 May 1984. <P0-S1>  It became their first UK and US number one hit. <P0-S2>  It was written and produced by George Michael. <P0-S3>  The single was certified Platinum in the US, which at the time commemorated sales of over two million copies. <P0-S4> "Wake Me Up Before You Go-Go" is a song by the British duo Wham! <SEP> <P1-S0> The discography of the Pet Shop Boys, an English electronic/pop music duo, comprises 13 studio albums, four compilation albums, two live albums, four remix albums, one extended play and 55 singles. <P1-S1>  The duo's debut single, "West End Girls", was first released in 1984 but failed to chart in most regions. <P1-S2>  However, the song was entirely re-recorded in late 1985, and this newly recorded version became their first number-one single, topping the UK Singles Chart, "Billboard" Hot 100 and Canadian Singles Chart. <P1-S3>  Parlophone Records released the duo's debut album, "Please", in the United Kingdom in March 1986. <P1-S4>  The album peaked at number three on the UK Albums Chart and was certified Platinum by the British Phonographic Industry (BPI). <P1-S5>  It also peaked at number seven on the "Billboard" 200 in the United States and was certified Platinum by the Recording Industry Association of America (RIAA). <P1-S6>  The following summer they released "It's a Sin", the lead single from their second album, "Actually". <P1-S7>  The single became another UK number one and also reached number nine in the US. <P1-S8>  This was followed by "What Have I Done to Deserve This? <P1-S9> ", with Dusty Springfield, which peaked at number two in both the UK and US. <P1-S10>  In the summer of 1987 the Pet Shop Boys recorded "Always on My Mind", a cover of the Brenda Lee track, and it became their third UK number-one single over Christmas 1987. <P1-S11>  This was followed by another UK number one, "Heart" in spring 1988. <P1-S12>  The album "Actually" was released in September 1987, peaked at number two in the UK and was certified three-times Platinum by the BPI. <SEP> <P2-S0> Return of the Mack is the debut studio album by English singer-songwriter Mark Morrison. <P2-S1>  It was first released through his Mack Life Records imprint in the United Kingdom and then released by Atlantic Records in the United States, with distribution via Warner Music Group on April 22, 1996. <P2-S2>  The album includes a well-known popular song "Return of the Mack", in which the song stayed for a remarkable forty-one weeks on the US "Billboard" charts. <P2-S3>  Upon its release, "Return of the Mack" received mixed reviews from music critics, who praised Morrison's strong voice and entertaining songs, but described the album as having weak production. <P2-S4>  The album stayed for thirty-eight weeks on the UK Albums Chart, where it debuted and peaked at number 4, and became a certified platinum by British Phonographic Industry (BPI). <P2-S5>  On the US "Billboard" 200, the album reached a peak of a number 76, however, it would eventually became a certified platinum by Recording Industry Association of America (RIAA), due to the success of the single "Return of the Mack". <P2-S6>  The album has since sold over 3 million copies worldwide. <SEP> <P3-S0> Wham! <P3-S1>  Wham! <P3-S2>  was an English musical duo formed by members George Michael and Andrew Ridgeley in 1981. <P3-S3>  They were briefly known in the United States as Wham! <P3-S4>  UK due to a naming conflict with an American band. <P3-S5>  sold more than 28 million certified records worldwide from 1982 to 1986.