I need help on this morning

A surveyor standing 55 meters from the base of a building measures the angle to the top of the building and finds it to be 39 . The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 49 . How tall is the radio tower? Round your answer to two decimal places. O A. 6.90 m O B. 6.66 m O C. 18.73 m O D. 9.70 m