In the given data set, the features and classes are given as follows:
f1 f2 f3
2 2 4 c1
2 4 3 c1
4 2 3 c1
6 8 3 c2
8 8 3 c2
10 8 4 c2
We have a new sample s = (4, 3, 3). Using the k-nearest neighbors (k-NN) algorithm with k = 5, find out the class of s.