It's Gonna Be Big (IGBB)

It's Gonna Be Big (IGBB)
It's Gonna Be Big (IGBB) is seeking venture capital investment of $8 million. The founder and the venture capital fund agree the firm is worth $15 million today, and the venture capital investor asserts it requires a 35% (compounded annually) expected return. IGBB and the venture capital investor foresee an IPO in four years, at which time IGBB is expected to be valued at $90 million.
-What share of IGBB's equity is necessary for the venture capital investor to achieve its required return?

A) 45%
B) 40%
C) 35%
D) 30%