If $$M = 0.1 + (0.1)^2 + (0.01)^2$$ and $$N = 0.3 + (0.03)^2 + (0.003)^2$$, then what is the value of $$M + N$$?

A

0.411009

B

0.413131

C

0.313131

D

0.131313