**Core Concept**
Tetanus is a bacterial infection caused by Clostridium tetani that affects the nervous system, leading to muscle rigidity and spasms. Premonitory symptoms of tetanus are early warning signs that indicate the onset of the disease.

**Why the Correct Answer is Right**
Premonitory symptoms of tetanus include trismus (lockjaw), stiffness of the neck, and difficulty swallowing. These symptoms occur due to the tetanus toxin's effect on the neuromuscular junction, causing muscle spasms and rigidity. The toxin blocks the release of inhibitory neurotransmitters, such as glycine and GABA, in the spinal cord, leading to increased muscle tone and spasms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
Classic premonitory symptoms of tetanus include trismus, stiffness of the neck, and difficulty swallowing. Remember the mnemonic "TIGER" to recall these symptoms: T - Trismus, I - Inability to swallow, G - Generalized muscle stiffness, E - Exaggerated reflexes, R - Rigidity of the neck and back.

**Correct Answer:** No options provided. Please provide the correct options for a complete explanation.