Question #N720

The sentence below contains an error in punctuation. Which choice corrects the error? <br> Although the painting was recently rediscovered in a dusty attic, it was clearly a masterpiece, the colors vibrant and the brushstrokes bold and confident.
A. Although the painting was recently rediscovered in a dusty attic, it was clearly a masterpiece, the colors vibrant and the brushstrokes, bold and confident.
B. Although the painting was recently rediscovered in a dusty attic, it was clearly a masterpiece, the colors vibrant, and the brushstrokes bold and confident.
C. Although the painting was recently rediscovered in a dusty attic, it was clearly a masterpiece; the colors vibrant and the brushstrokes bold and confident.
D. Although the painting was recently rediscovered in a dusty attic, it was clearly a masterpiece the colors vibrant and the brushstrokes bold and confident.