A solar company invests in the following securities. Identify those investments as either an investment in debt (D) securities or equity (E) securities.
_____ a. U.S. treasury bonds
_____ b. Google stock
_____ c. Certificate of deposit
_____ d. Apple bonds
_____ e. IBM Corporate notes
_____ f. German government bonds
_____ g. Amazon stock
_____ h. Costco corporate notes
_____ i. Chicago municipal bonds
_____ j. Apple stock
_____ k. David Bowie bonds
_____ l. Facebook stock