Understanding this Tsumego.

I'm new to go. Trying to work on some beginner puzzles on the BearTsumego App. I'm confused by the answer to this puzzle.

Here the correct answer is the orange circle and the blue cross is incorrect and my first answer.

Why would I not take the white stone and form two eyes?

I'm new to go. Trying to work on some beginner puzzles on the BearTsumego App. I'm confused by the answer to this puzzle.

Here the correct answer is the orange circle and the blue cross is incorrect and my first answer.

Why would I not take the white stone and form two eyes?