What is the difference between a bonds current yield (CY) and its simple yield to maturity (SYTM)?

a.

CY ignores capital gains, whereas SYTM does not.

b.

CY ignores accrued interest, whereas SYTM does not.

c.

SYTM controls for risk, whereas CY does not.

d.

There is no difference, they are two names for exactly the same thing.

e.

CY ignores reinvestment risk, whereas SYTM does not.