In a code language, 'people are confident' is written as 'lur bur duk', 'we are helpful' is written as 'kur duk sur', 'we have cars' is written as 'sur mur jur' and 'people have honesty' is written as 'lur jur nur'. What is the code for 'confident'?

• A. lur
• B. bur
• C. jur
• D. duk