OTTAWA — Recent volatility on the markets has bruised RRSP investments. As the Feb. 29 deadline for contributions looms, here are five things to know about RRSPs:Why the RRSP is the best retirement plan out there for the dual citizen living in CanadaWhy business owners shouldn’t bother with an RRSPWhat you should look for when picking stocks to hold in your RRSP— They allow you to defer taxes, not avoid them. You are able to deduct your contributions from your income, but when you withdraw the money in retirement, you will pay income tax.— Your unused RRSP contribution room carries forward. If you don’t maximize your contribution for a given year, the unused portion carries forward.— If you have a pension plan at work, that can reduce your RRSP contribution room. Depending on how generous your pension plan is, the amount you are able to contribute to your RRSP may be substantially reduced.— Choosing between saving for retirement using your RRSP or tax-free savings account depends on the tax bracket you are in today and where you expect to be when you start withdrawing money from your RRSP.— You can withdraw money from your RRSP under the home buyers’ plan and the lifelong learning plan, but if you do you must repay the money to your account within a set amount of time. It is generally 15 years under the home buyers’ plan, while under the lifelong learning plan it is generally 10 years.