According to the European Commission's report on shifting private finance toward climate-friendly investments, institutional investors' purchasing of green bonds plays the following role: Select one:

a. Accounts for 15% of the total global bond market

b. Provides institutional investors with exposure to climate-friendly thematic indices

c. Provides an exit strategy for bank lenders and equity investors so they can quickly invest in new climate-friendly projects

d. Raises initial capital needed to break ground on climate-friendly projects