The correct option is
A Upper jaw premolars
The dentists use two digit numbering system as mentioned:
1)The upper right teeth begin with the number '1'(i.e.,11)
2) The upper left teeth begin with the number '2'(i.e.. 21)
3) The lower right teeth begin with the number '3'(i.e.,31)
4) The lower left teeth begin with the number '4'(i.e.,41)
and we know that each quadrant of teeth on each left and right side of the jaw is having 2 incisors, 1 canine, 2 premolars, and 3 molars.
So, the teeth number 14 and 15 according to the above-mentioned format will be 4th and 5th teeth in the upper right quadrant.
So, these teeth will be Upper right pre-molars.
So, the correct answer is 'Upper jaw premolars'.