resign and join parent company

Hi

I'm new to this forum and i want some help regarding my Visa status . I'm in US under L1B visa and i'm employed by a company A in India and i'm working for A's parent company in US . If i quit company A in India and join company A's parent company in US is my Visa L1 still valid or i have to ask US A's parent company to sponsor H1B?

The thing is, i'm planning to join the same company in US but i'm quiting my job in India while i still have a valid L1B visa? Do i require H1B ?
 




	Thanks for your answe