Over the past years, Elvis has purchased 350 shares of Singer, Inc., stock. His first purchase was in 2012 when he acquired 40 shares for $30 a share. In 2015, Elvis bought 160 shares at $15 a share. In 2018, Elvis acquired 150 shares at $50 a share. Elvis sells 100 shares at $70 per share in the current year. If Elvis cannot identify the exact shares sold, what is his recognized gain?

Group of answer choices:

$4,900

$2,100

$7,000

$2,000

$5,000