Consider the following statements regarding the lifespan of stars
1. The lifespan of a star is directly proportional to its mass—more massive stars live longer than less massive ones.
2. More massive stars burn their nuclear fuel at a faster rate due to higher temperatures.
3. The Sun, being an intermediate-mass star, is expected to last for about 10 billion years in its main sequence phase.
Which of the statements given above is/are correct?