Danny made a mistake in the following problem.
the mistake was made in line only input the number of the first incorrect line.
line 1
21 + 35 ÷ 7 + 6(2)
line 2
21 + 5 + 6(2)
line 3
21 + 11(2)
line 4
21 + 22
line 5
43

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit