oil b erk ahai pair hai lakin is ki moing speed bohatfast hai jis ki wajh se humain is main se acha profit hasil nhio hota hi sis leya humain is ko samjhna chaya kun ka jb hum is ko samjhty nhi hai iss ka tremnd ko nhi ksdekhty hain toh huamin kabi b ismin se acha profit hasil nhi hota hai