Find the integer b such that

b 87(mod 39) and 850 < b 900

choose the correct answer for b

b is greater than 860 but less or equal than 870

b is greater than 850 but less or equal than 860

b is greater than 880 but less or equal than 890

b is greater than 890 but less or equal than 900

b is greater than 870 but less or equal than 880