Awoman who is pregnant is concerned about eating fish because of its potential contamination with mercury. what would you tell her? a. margarines and vegetable oils are excellent sources of omega-3 fatty acids and can be used instead of fish. b. she can substitute foods with high omega-6 fatty acid content because it can be converted to omega-3 fatty acids. c. she can select fish species that provide epa and dha but are low in mercury such as salmon. d. she can eat any farm-raised fish and be guaranteed to receive the omega-3 benefit without the mercury risk. e. she needs to increase her intake of omega-6 fatty acids to provide protection from heart disease.