Determine all the singular points of the given differential equation. (8 sin x)y" + ( cos x)y = 0 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (2n + 1)n O A. The singular points are all x S and all x = 2 , where n is an integer. O B. The singular points are all x S and all x = nx, where n is an integer. (2n + 1)at O c. The singular points are all x = 2 , where n is an integer. O D. The singular points are all x = nit, where n is an integer. O E. The singular points are all x S OF. There are no singular points