BALS Humanities concentration: help me decipher the requirements?

[Notgodot]

Hi all, I'm trying to wrap my head around the requirements for the Humanities concentration. Here's what the website says:

Students complete 30 credits in the area of study that include at least 15 credits at the 300/400 level and no more than 6 credits at the 100 level. This will include 18 credits of Humanities courses and an additional 12 credits of Liberal Studies courses.

So, tell me if I've got this right:

A. 18cr Humanities credits and 12cr Lib Studies credits
B. 6cr can be 100 level of either Humanities or Lib Studies
C. 15cr must be 300/400 level of either Humanities or Lib Studies

Because I can also read this as:

A. 18cr Humanities credits and 12cr Lib Studies credits
B. 6cr can be 100 level of Humanities only
C. 15cr must be 300/400 level of Humanities only

...but then that would mean 21cr of Humanities was required, so maybe it's:

A. 18cr Humanities credits and 12cr Lib Studies credits
B. 6cr can be 100 level of either Humanities or Lib Studies
C. 15cr must be 300/400 level of Humanities only

What do you think?