Which transformations of the graph of f(x)=-4^x result in the graph of f(x)=4^x+3?

1. reflection over the x-axis and shifted 3 units to the left.
2. reflection over the y-axis and shifted 3 units to the left.
3. reflection over the x-axis and shifted 3 units to the right
4. reflection over the y-axis and shifted 3 units to the right.