System of units, the fundamental quantities of Planck's constant, speed of light, and time. If the dimensions of light bulbs constant is h⁻¹, what is the value of x, y, z?
a) x = 0, y = -1, z = 1
b) x = 1, y = -1, z = 0
c) x = -1, y = 1, z = 0
d) x = 0, y = 1, z = -1