Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) Similar elements are organized in the same period of the periodic table.
B) Generally, the charge on the cations of the main-group elements is equal to the group number.
C) Non-metals are organized on the upper-left side of the periodic table.
D) Elements on the right side and in the centre of the periodic table are non-metals.
E) Elements are organized in order of decreasing atomic number on the periodic table.