Should i answer No for 1099-R 2b, i have Total distribution checked and no where for me to enter it. 2b here, only has Taxable amount not determined...which i don't have

turbo tax 1099R entry does not a place to enter information from my form that is in 2b Total distribution -
the Turbo tax form only has 2b Taxable amount not determined, but I do not have that box checked on my form. i also have it blank in 2a