Task: Question Answering
Input (English): Question: Sulfamethoxazole is microencapsulated by complex coacervation using: 
 Options:  <1> Gelatin and gum arabic. <2> Albumin and gum arabic. <3> Gelatine and sodium alginate. <4> Pectin and gelatin. <5> Gum arabic and pectin.
Output (English): 1