Which method call is the same as setting the color property of a material $($material$.$color $=$ newColor;$)($unity and C$++)$

a$)$material$.$SetColor$("\_$Color", newColor$)$;

b$)$material$.$SetColor$($color$,$ newColor$)$;

c$)$material$.$SetColor$($emissionColor$,$ newColor$)$;

d$)$material$.$SetColor$("\_$EmissionColor", newColor$)$;