What is a Series I-Bond?
An I-Bond is a savings bond you can purchase from treasury direct that helps protect you from inflation. An I-Bond earns interest at both a fixed rate and the inflation rate, which is determined by the treasury department and is adjusted twice a year.  You can purchase up to $10,000 of electronic I-Bonds per calendar year.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is a Series I-Bond?
### Input: 
### Response: An I-Bond is a savings bond you can purchase from treasury direct that helps protect you from inflation. An I-Bond earns interest at both a fixed rate and the inflation rate, which is determined by the treasury department and is adjusted twice a year.  You can purchase up to $10,000 of electronic I-Bonds per calendar year.