Other Things Constant, the Current Supply Curve of Index Cards

Other things constant, the current supply curve of index cards is likely to shift to the right if _____

A) the price of the wood pulp used in the production of index cards increases.
B) the technology used in index card production becomes more expensive.
C) the price of index cards increases.
D) the price of its substitute good decreases.
E) the expected future price of index cards is lower than the current price.