The Student Room Group
Reply 1
cross i think, possibly complementary. If it was me i'd go cross.
Reply 2
is there an E
Reply 3
Oh yeah it should be cross. The answers including complementary and substitutive goods is confusing because "related" goods really could be either one of them... so I would get rid of those choices for that reason.
Reply 4
Cross elasticity. If one affects the other, they're related anyway. And they are two different goods.

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