Simple Economics question. Please help me out.?

[denzell]

If the price of aluminum (a substitute for steal) rises, what happens to the steel producer's supply curve? The supply curve
a) shifts to the left
b) shifts to the right
c) remains unchanged

I am an undergrad in economics and this question should be extremely easy for me. But I am convinced its C, because a higher price for the substitute would create more consumer demand for the product that is cheaper or is less expensive. So, the demand curve for steal would shift right and the new equilibrium would be at a higher quantity sold and at a higher price without a change in supply. But the book says the answer is B. But I totally disagree. What am I missing?

Help me out.

[ammi]

Aluminium is a very poor substitute for steel, but that's largely beside the point.

The answer is C. Any other answer requires you to consider second round effects and (preferably) for the production of steel to be a perfectly competitive market (clearly, it isn't).

Suggest the book's authors probably got their words mixed up when writing the question.

[hjortur]

Aluminium is a very poor substitute for steel, but that's largely beside the point.

The answer is C. Any other answer requires you to consider second round effects and (preferably) for the production of steel to be a perfectly competitive market (clearly, it isn't).

Suggest the book's authors probably got their words mixed up when writing the question.

unless the firms are colluding, the supply curve should remain unchanged and demand for steel will increase.

[garwyli91]

C