Which of the following can be solved by Law of Sines? (Big letter stands for the angle and small letter stand for the side.) A. A = 28°, b=15 cm., a=6cm., B =? B. a = 28, b=15 cm., c=6cm., A =? C. A= 28°, B=15°, C=137°, c =? D. A = 28°, b=15 cm., c=6cm., a =?