The Grapes of Wrath is the masterpiece ofA．John Steinbeck.B．John Winthrop.C．John Updike.D．

The Grapes of Wrath is the masterpiece of

A．John Steinbeck.

B．John Winthrop.

C．John Updike.

D．John Cotton.

请帮忙给出正确答案和分析，谢谢！