Two years ago, Sheila invested $1,000 in MNO mutual fund. At the end of the first year, her account was worth $1,200, and she invested another $1,000. At the end of the second year, MNO's shares were priced at $50 a share. MNO paid no dividends during the 2 year period. If Sheila originally purchaed 22 shares, what was MNO's annualized rate of return over the 2-year period?

A. 0.53%

B. 4.88%

C. 10%

D. 20%