answer true or false with explanation

2 A bond's yield and coupon rate vary over time depending on market and economic conditions. 3. A bond selling at par will have a yield to maturity equal to its current yield. 4. Convertible bonds allow the issuing company to convert outstanding bonds to shares of common stock when the company deems necessary. 5 When a call protection provision is written into the bond indenture, the issuing company is prevented from calling the bond throughout the bond's life