Can one say<br/><span style="color:#ff0000;">a. They could both no longer work.</span><br/><span style="color:#ff0000;">b. They could neither work any longer.</span><br/><span style="color:#ff0000;">c. Neither of them could work any longer.</span><br/>?<br/><br/>My feeling is that (b) is the only one that does not work.<br/><br/>Many thanks.