Jess is presenting a problem-solution speech where she has just noted the problem

NASA is facing with funding, and she is moving into an area discussing viable solutions.

Which sentence(s) best fulfill the requirements of an effective transition for that speech?
A) "Now that I've established the problem, I'll look at possible solutions."
B) "Let's now look at possible solutions that will keep us going ‘where no man has
gone before.'"
C) "As I've just said, NASA needs approximately $60 million to continue the
construction of the space station because we are so far behind schedule. NASA
also is working with less money than ever before due to competition with other
government agencies and programs. But we can find money in any number of
places, and specifically through taxes, cuts in military funding, and from our
partners in the project."
D) "The point is simple—NASA is strapped for cash and the space station project is
in jeopardy. This need not be the case. As I will suggest, there are three funding
alternatives that will allow us to continue our quest in space."

D