Sandy Schumer owns the stock of a company that is holding an annual meeting next week. At the meeting, a vote will be held on a major shift in the firm's strategy. Sandy wanted to attend the meeting and vote, but she was told she couldn't vote. Though initially miffed, she came to terms with it when she realized the dividends she received were relatively high and secure. Sandy is holding:

a) Bonds

b) Preferred shares

c) Common shares

d) Speculative shares