Below is LinkedIn$$s Revenue History from $2012$ to $2015$ before its acquisition by Microsoft. Estimate the historical CAGR for LinkedIn.

Year Dec$15$ Dec$14$ Dec$13$ Dec$12$

Net revenue $299122191529972$

a$.$

$18\mathrm{.}26\%$

b$.$

$25\mathrm{.}07\%$

c$.$

$32\mathrm{.}45\%$

d$.$

$45\mathrm{.}45\%$