What are the products of addition of `D_2` to trans-2-pentene.

Explanation

To determine the products of the addition of D₂ (deuterium gas) to trans-2-pentene, we can follow these steps:

### Step 1: Understand the Structure of trans-2-pentene
Trans-2-pentene has the following structure:
- It has a double bond between the second and third carbon atoms.
- The substituents on the double bond are arranged in a trans configuration, meaning that the two methyl groups (CH₃) are on opposite sides of the double bond.

The structure can be represented as:
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