[KWH]

It appears that some of you contend NFHS 5-1-3c is in direct conflict with NFHS 5-1-3f.

Using NFHS logic, these two rules can never conflict as;
NFHS 5-1-3c is applicable only while players of A and B are on the field,
while,
NFHS 5-1-3f is applicable only while players of K and R are one the field.

Reference: NFHS 2-42-3 and 2-42-4
Note that 2-42-4 states that Team designations are retained until the ball is next declared ready for play

Since Team desinations do not change during a down, 5-1-3c DOES NOT APPLY to the play in question.

Hence, since only 5-1-3f applies to the play in question, the answer then to your original play has to be:
1st and 10 for K at midfield

Don't ya'll just love these forums??