How many tests are run, when below code is tested using nose?

Question

Q. How many tests are run, when below code is tested using nose?

import unittest

def test_sample1():

    assert 3 == 3

class SampleTestClass(unittest.TestCase):

    def test_sample2(self):

        self.assertEqual(3, 3)

A. 3

B. 0

C. 2

D. 1