A current of 1 . 5 A is flowing through a triangle, of side 9 cm each. The magnetic field at the centroid of the triangle is: (assume that the current is flowing in the clockwise direction)
A) 3 * 10⁻⁷ T
B) 6 * 10⁻⁷ T
C) 9 * 10⁻⁷ T
D) 12 * 10⁻⁷ T