Select the incorrect statement.

Options

A. Anthrax is a bacterial disease thataffects humans and cattle.
B. Clostridium botulinum causes a serioustype of food poisoning
C. Citrus canker is a viral disease thataffects citrus fruits.
D. Yellow vein mosaic is a viral disease that affects bhindi

Explanation

To determine the incorrect statement from the options provided, let's analyze each statement step by step:

1. **Statement 1: Anthrax is a bacterial disease that affects humans and cattle.**
- **Analysis:** This statement is true. Anthrax is indeed caused by the bacterium Bacillus anthracis and can infect both humans and animals, especially cattle.

2. **Statement 2: Clostridium botulinum causes serious type of food poisoning.**
- **Analysis:** This statement is also true. Clostridium botulinum produces a toxin that can lead to botulism, a severe form of food poisoning that can be fatal.

3. **Statement 3: Citrus canker is a viral disease that affects citrus fruit.**
- **Analysis:** This statement is incorrect. Citrus canker is not a viral disease; it is caused by the bacterium Xanthomonas citri. Therefore, this statement is false.

4. **Statement 4: Yellow vein mosaic is a viral disease that affects bindi.**
- **Analysis:** This statement is true. Yellow vein mosaic is indeed a viral disease that affects the okra plant (commonly known as bindi).

**Conclusion:** The incorrect statement is Statement 3, which claims that citrus canker is a viral disease affecting citrus fruit.

### Summary of the Solution:
- Statement 1: True (Anthrax affects humans and cattle)
- Statement 2: True (Clostridium botulinum causes food poisoning)
- Statement 3: Incorrect (Citrus canker is a bacterial disease, not viral)
- Statement 4: True (Yellow vein mosaic is a viral disease affecting bindi)

**Final Answer:** The incorrect statement is Statement 3.