Which of the following best explains why Starbucks agreed to the shareholder proposal on plastic straws submitted by As You Sow? a. Starbucks was already planning on banning plastic straws before the shareholder proposal was voted on. The company waited until after the vote to announce their plan because working with As You Sow would generate good PR b. As You Sow's shareholder proposal received 25% of the vote and corporations generally concede to proposals once a quarter of shareholders vote for them c. The price of plastic straws had been increasing and Starbucks saw the proposal as an opportunity to both please stakeholders and cut costs d. Many cities were already considering plastic straw bans and agreeing to the proposal allowed Starbucks to act before regulatory action was taken