Which Scottish novelist, poet, and essayist wrote The Master of Ballantrae and the influential gothic tale The Strange Case of Dr Jekyll and Mr Hyde?

• A Walter Scott
• B James Hogg
• C Arthur Conan Doyle
• D Robert Louis Stevenson ✓

R.L. Stevenson published Dr Jekyll and Mr Hyde in 1886, which sold 40,000 copies in six months; he also wrote Treasure Island and Kidnapped before settling in Samoa.