The name of the company with personal work experience is changed as follows

I have been working in the same company. If only the company name changes, there are many ways to fill in my resume:

1, write the changed company name and note the original company name.

2. Write the company name at that time, separated by "/",and then write the changed company name.

3. Write down the changed name of the company, and then describe the original name of the company in the company profile.