Find the quotient.
(5ab - 10b2 + 15bc) ÷ 5b
a + 2b - 3c
a - 2b + 3c
a - 2b - 3c
(5ab - 10b2 + 15bc) ÷ 5b
a + 2b - 3c
a - 2b + 3c
a - 2b - 3c