Problem $5$: Long$-$term Horizons

Bond A with maturity $25$ years and F $=$ $$5,000$ pays an annual coupon X$.$ It has yield to maturity

$12\%$ and currently sells for $$5,235.$ Bond B with F $=$ $$2,000$ and an annual coupon of $$250$ has

also maturity $25$ years.

$1.$ Is the annual coupon of bond A above, below or exactly $$600?$

$2.$ Price coupon bond B$.$

$3.$ What should the annual coupon of B be$,$ in order for it to sell at par?