<prompt> For the following causes of sexual dysfunction, select the most likely clinical feature.Can be caused by vascular disease.loss of sexual desirefailure of erection with absent nocturnal penile tumescence NPTabsence of emissionabsence of orgasm with normal libido and erectile function  <response>: Vascular disease, by itself or in conjunction with peripheral neuropathy in DM, is a common cause of erectile dysfunction. The lesions can be in large vessels aortic occlusion, Leriche syndrome, small arteries, or even in the sinusoidal spaces. 