K-means quiz question no.7

We run the following code on reshaped coloured image data (img) of size (100,100,3):

from sklearn.cluster import KMeans
kmeans = KMeans(clusters = 7)
kmeans.fit(img)
centers = kmeans.cluster__centers_

centers = np.array(centers,‘uint8’)
What would be the size of the ‘centers’ array?

(100,100)

(7,10000)

(7,3)

(10000,7)