Filing jointly as Married or Single

I stayed in the US from Sept 5th 2017 to Feb 19th 2018 and during which I received income in the US from my US employer. My spouse who is employed with a different entity in India, had taken a "Loss of Pay" leave, and visited US from Nov 27th, 2017 to Feb 19th, 2018. I had come on an L1 -B Visa and my spouse as a dependent in the L2 Visa. My spouse did not work during the period of her stay in the US, hence did not earn any income. Since my wife had come for a short period, she did not apply for a SSN or a Tax Identification Number.

Can i file jointly as Married?

Is it possible to file for my spouse through she does not have a tax identification number or an SSN?

If i can, should I change the martial status as Married in my W2 as my it is currently indicated as Single?

Appreciate your answers. Thanks in advance.