Answer: The number of premium memberships sold during week 3 was 2 times the number of premium memberships sold during week 2.
Explanation:
Testing option A.
Premium memberships Week 1 = 40
Premium memberships week 4 = 190
Week 4 is more than 75% of week 1. Indeed it is over 400%. Option A is incorrect.
Testing option B:
Total memberships week 1 = 110 + 40 = 150
Total memberships week 2 = 90 + 50 = 140
Option B is incorrect.
Testing option C:
Premium memberships week 3 = 100
Premium memberships week 2 = 50
Option C is correct because 100 is twice 50.