Reqired Minimum Distribution from Several Tax-Deferred Accounts

I have money in three different tax deferred accounts..
--- a couple of small IRAs and the NYC Deferred Compensation Plan (457)

Now that I'm 70 1/2, I have to start taking money out.

My Question is: Can I take the TOTAL required Distribution amount (TOTAL FOR ALL ACCOUNTS)out of one TYPE (probably the 401k/IRAs this year)

It is the fact that the money is in different type accounts that troubles me.