If P represents radiation pressure, c represents speed of light and Q represents radiation energy striking a unit area per second, then non-zero integers x,y and z such that PˣQʸcᶻ is dimensionless are
A x=−1,y=1,z=1
B x=1,y=1,z=1
C x=1,y=1,z=−1
D x=1,y=−1,z=1