A = {1, 3, 5, 7, 9}

B = {2, 4, 6, 8, 10}

C = {1, 5, 6, 7, 9}

A ∩ (B ∪ C) = ?


a {1, 5, 7, 9}

b {1, 5, 6, 7, 9}

c {}