Which of the following descriptions of Thomas Hardy is wrong? （）
A.Most of his novels are set in Wessex. B.Tess of the D'Urberuilles is one of the most representative of him as both a naturalistic and a critical realist writer. C.Among Hardy‘s major works ,Under the Greenwood Tree is the most cheerful and idyllic. D.From The Mayor of Casterbridge on, the tragic sense becomes the keynote of his novels.正确答案D
