Sarah is single and earns $60,000 in salary. She wants to invest $2,500 per year in an IRA but is not sure which type she qualifies for and whether this would be a better investment than investing the...

Sarah is single and earns $60,000 in salary. She wants to invest $2,500 per year in an IRA but is not sure which type she qualifies for and whether this would be a better investment than investing the money in preferred stock paying a 6 percent annual dividend.