Correct the sentence by using right option, " I am tired as i am working since morning."

I was working

I have been working

I had been working

I will be working

"I am tired as I have been working since morning."

میں صبح سے کام کر کے تھک گیا ہوں۔

The present perfect continuous tense is used here to indicate an action that started in the past and is still ongoing.