Riley, an entrepreneur, is the sole owner of their seed-stage startup, and is seeking their first round of institutional capital from a VC. Riley and the VC settle on a pre-money valuation of $5 million. The VC asks that 10% of the pre-money be allocated to an option pool. The VC then invests $2 million. What is Riley's ownership % after the financing round?

Group of answer choices

56.4%

71.4%

90%

64.3%