State the first law of thermodynamics.

Options

A. `DeltaU = Deltaq - W`
B. `q = DeltaU - W`
C. `qd +dW = 0`
D. `DeltaU q +W`

Explanation

**Step-by-Step Solution:**

1. **Understanding the First Law of Thermodynamics**: The first law of thermodynamics is a principle that relates to the conservation of energy. It states that energy cannot be created or destroyed, only transformed from one form to another.

2. **Expression of the Law**: The first law can be mathematically expressed as:
\[ \Delta U = Q - W \]
...