Which electronic duo, formed in 1981 by Vince Clarke and Andy Bell, are known for synth-pop hits including A Little Respect and Sometimes?

• A Pet Shop Boys
• B Erasure ✓
• C Depeche Mode
• D Yazoo

Erasure have sold over 25 million records worldwide and had five consecutive number-one albums in the UK charts between 1988 and 2015.