Many bonds are not callable, but for those that are, which of following is a common feature?

Many bonds are not callable, but for those that are, which of following is a common feature?

Multiple Choice

• Called any time after 2 years of issuance.
• Called any time after 10 years of issuance.
• Called any time after 2 years from the time an investor buys the bond.
• Called any time after 10 years from the time an investor buys the bond.