Explain clearly

4. Assess the type of risk-attitude represented by the following expected utility functions: (i) u(x)=5x4 -2x+3, (ii) v(x)=3x+5 , (iii) w(x)=Inx+10. a) u, v denote risk-neutrality, and w risk-propensity b) u denotes risk-propensity, v risk-neutrality, w risk-aversion c) u,v.w. all denote risk-neutrality d) u,w denote risk-aversion , v risk-propensity e) none of the previous statements a-d is correct