How does the graph of g(x)= -(x+3)^4 compare to the parent function of f(x) = x^4?

a. g(x) is shifted 3 units to the right and 1 unit up.

b. g(x) is shifted 3 units to the right and 1 unit down.

c. g(x) is shifted 3 units to the right and reflected over the x-axis.

d. g(x) is shifted 3 units to the left and reflected over the x-axis.