Suppose that the current price of an asset is $31. The asset is expected to pay a dividend of $3 in one month. The asset also has an upfront carrying cost associated to it of $1. The risk-free rate is 5%. The price of a 3-month European call on this asset with strike $30 is $4. The price of a 3-month European put with strike $30 is $3.25.

Construct a risk-free profit involving one call and one put.