Problem $5$c: Knowing that a given vertical shear $V$ is applied in the hat$-$shaped extrusion shown. The neutral axis is found to be $30$ mm from the bottom. The relationship between the shearing stresses at points a and $b$ can be found

a$){}_a<msub><mrow><mi></mi></mrow><mrow><mi>b</mi></mrow></msub>$

b$){}_2>{}_b$

c$){}_a={}_b$

d$)$ cannot be determined