Read the text and determine if the sentence is true (see options at the end):

Cosmonaut Sergei Avdeyev, currently on board the Mir space station, has become the person with the longest total stay in space. He has clocked up 681 days.

Sentence: Sergei Avdeyev was in space for less than two years
Available choices:
 (a). Yes
 (b). It's impossible to say
 (c). No