Question: What was Timothy Geithner's position during the fall of 2008?
Answer: Without the ability to obtain investor funds in exchange for most types of mortgage-backed securities or asset-backed commercial paper, investment banks and other entities in the shadow banking system could not provide funds to mortgage firms and other corporations.
A single-select problem: Is the question answered in a satisfactory fashion?

OPT:
(A). yes
(B). no
(B).