No one understands better than a man who participates in a project that the proof of the pudding is in the eating

• A.To enjoy the taste of the pudding one must eat it after handwork.
• B.Only the man with actual experience of a thing understands what it entails
• C.People who have never eaten a pudding cannot say how it tastes
• D.Reliance on one's effort is the surest way to achieve anything