Bt cotton is not

Options

A. a GM plant
B. insect resistant
C. a bacterial gene expressing system
D. resistant to all pesticides

Explanation

To answer the question "Bt cotton is not," we need to analyze the given options and understand what Bt cotton is.

### Step-by-Step Solution:

1. **Understanding Bt Cotton**:
- Bt cotton is a type of genetically modified organism (GMO). It has been engineered to express a specific toxin that is harmful to certain pests.

2. **Identifying the Options**:
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