A - 0 would be 0mins B - 1 would be 2.5mins C - 2 would be 5mins D - 3 would be 7.5mins E - 4 would be 10mins
Explanation:
every 2 questions equals 5 minutes. so 0 questions would obv be 0 mins 1 question would be half of 5 mins which would be 2.5 and so on