Read the following paragraph and determine if the hypothesis is true:

Louis Armstrong (19011971), nicknamed Satchmo or Pops, was an American trumpeter, composer, singer and occasional actor who was one of the most influential figures in jazz. His career spanned five decades, from the 1920s to the 1960s, and different eras in jazz.

Select from the following. 1. Yes. 2. It's impossible to say. 3. No.
Hypothesis: Louis Armstrong was in his 20's when his career began
2.