Determine the position of the centroid of the attached shape.is it,a)17.3 mm in the x

Determine the position of the centroid of the attached shape.

is it,

a) 17.3 mm in the x

direction and 31.9 mm in the y direction

b) 31.9 mm in the x direction and 17.3 mm in the y direction

c) 11.9 mm in the x direction and 28.8 mm in the y direction

or 

d) 28.8 mm in the x direction and 11.9 mm in the y direction