A buyer received a letter in the mail on 1^stJanuary, 20X1 offering to sell 5,000 units of inventory for $20 each. The seller's letter concluded with the following statement:

"I know that this offer is so attractive that I will assume that you accept it unless I hear otherwise by 31^stJanuary, 20X1."

The buyer did not reply. The seller shipped all the unitsof inventory on 1^stFebruary, 20X1.

With reference to the short case study above, discuss what theBuyer's responsibilitiesare under the Convention on Contracts for the International Sale of Goods (CISG)?