1099-B - TOD Inheritance Funds

My mother had a TOD account which was split among her 4 kids after her passing in 2016.  The account was split into 4 new accounts and then the 4 new accounts were closed.  This all took place between August 20 and Nov 21, 2016.  The 1099-B form from the investment firm has a summary page and then several detail pages.  The detail pages are a mixture of Short Term-Noncovered, Long Term-Covered and Long Term-Noncovered.  I am able to enter Box 1d and 1e from the summary page but do not know what Sales Category to select.  Boxes 1f and 1g are $0 as well as Box 4 is $0.  Because these are inheritance funds, do I even need to enter this 1099-B?  Do I even owe taxes on these funds which are less than $12k total.  Please advise.  Thank you!  Jill B.