Which is the most fluid revision of the following paragraph?

The thunder cracked. Lightning filled the sky. Still, the rain did not come. All the animals were wild with anxiety.

A.
The thunder cracked and lightning filled the sky. Still, the rain did not come, but the animals were wild with anxiety.

B.
Because the rain did not come, the animals were wild with anxiety, and the thunder cracked. Lightning filled the sky.

C.
Although the thunder cracked and lightning filled the sky, the rain still did not come, and the animals were wild with anxiety.

D.
None of the above