Select the function that represents an arithmetic sequence. a(n) = p(1 + i)n – 1, where n is a positive integer b. a(n) = p + (n – 1)i • p, where n is any real number c. a(n) = p(1 + i)n – 1, where n is any real number d. a(n) = p + (n – 1)i • p, where n is a positive integer