Question: Alva wanted to take friends out to a Sacramento Rivercats baseball game. Tickets were on sale at the stadium for $15 each, and they were planning to buy 10 tickets. Unfortunately Alva waited too long and tickets sold out. Instead, they bought tickets from a scalper for $20 each, but decided to only buy 8 tickets at that price. What was the utility cost of Alva's procrastination? That is, what was the equivalent variation of the price change? (Select only one answer from below)

(a) +$10: their spending on tickets increases by this much (b) $0: price changes do not affect total income (c) $0: the price change is inframarginal because they still attend the game (d) -$10: their spending on tickets increases by this much (e) Between -$10 and -$30: some of the cost is offset by substituting to other consumption (f) Between -$10 and -$30: a price change is equivalent to a binding quota (g) -$30: this is the difference in cost to afford 8 tickets at the old price (h) More than -$30: other consumption also declines as a result of the price change (i) More than -$30: tickets are a luxury good with an income elasticity greater than 1 (j) Unknown: we need to know their Engel curve to calculate equivalent variation