Can we draw the following hypothesis from the context (see options)? 

Context:

Federal Reserve Chairman, Alan Greenspan, warned Friday that recent gains in U.S. home prices, stock values and other forms of wealth may be temporary and could easily erode if long-term interest rates rise.

Hypothesis: The Federal Reserve Chairman advised on the long term effects on forms of wealth due to interest rates
Options: (1). Yes. (2). It's impossible to say. (3). No.
(1).