elements = [A, B, C, D]

relevantRequirements = elements.filter (x) ->
  x isnt "Not Applicable"

requirementsMet = relevantRequirements.filter (x) ->
  x is 'Yes'

if relevantRequirements.length == 0 
  "Not Applicable"
else
        indicatorScore = (requirementsMet.length / relevantRequirements.length) * 10