When a number of identical small magnets are arranged in a line, the strength of the resultant magnet

• A.ia largest when they are arranged end to end
• B.is greatest when they are arrangedparallel with like poles adjacent to each other
• C.depends only on the number of magnets provided they arev parallel
• D.is greater when the magnets are arranged on a wooden surface than on a metaln surface
• E.