**Core Concept**
Simple febrile seizures are a common cause of seizures in children, typically occurring between 6 months and 5 years of age. They are usually benign and self-limiting, but there is a concern about the potential risk of developing epilepsy.

**Why the Correct Answer is Right**
Children with simple febrile seizures have a low risk of developing epilepsy. The American Academy of Pediatrics estimates that less than 3% of children with simple febrile seizures will develop epilepsy. This is because simple febrile seizures are usually caused by a febrile illness, and the underlying brain is not significantly abnormal. The risk of developing epilepsy is higher in children with complex febrile seizures, which are characterized by a longer duration, higher fever, or focal neurological signs.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely incorrect because the risk of developing epilepsy is higher than 3% in children with simple febrile seizures.

**Option B:** This option may be a distractor, but the actual percentage is less than 3%.

**Option C:** This option is incorrect because the risk of developing epilepsy is not as high as 10% in children with simple febrile seizures.

**Option D:** This option is incorrect because the risk of developing epilepsy is not as high as 5% in children with simple febrile seizures.

**Clinical Pearl / High-Yield Fact**
It's essential to note that children with a family history of epilepsy or a previous seizure disorder are at higher risk of developing epilepsy after a febrile seizure.

**Correct Answer:** B. 3%