salams,
segment 20th of Q1 (MCQs) suggests three options:a,b,c while the fourth option d is missing in the original paper as well. here i am stressing upon that part only because missing option d must be :"both of these" and its the correct answer. while my line of thought failed to get how the mighty examiner checked the correct ans when a correct option was missing in GK-iii paper.
regards,
Rooster.