Task: Question Answering
Input (English): Question: A patient with peripheral occlusive arteriopathy who presents intermittent claudication will be recommended: 
 Options:  <1> Absolute rest to reduce the demands of O2. <2> Elevate the legs to reduce pain. <3> Apply dry heat to the legs to promote vasodilation. <4> Walk on flat surfaces. <5> Use gradual compression stockings.
Output (English): 4