There was is Nothing wrong with the language, it is the same as for the transponder requirement.
Within the 30nm arc defining the mode c veil, if the ceiling of the associated class b is 9000msl, you cannot climb above 9000 without the proper equipment.
If the class b goes to 10,000msl, no problem, climb as high as you like to 17,999.

You cannont fly over the top of Class B or Class C below 10,000 MSL. TFR the Class C tops out at 5,000, you cannot fly between 5,000 and 10,000 without equipment. Above 10,000 to 17,999 is fair game.

BillT