Mark wants to create a scale drawing of the poster shown below:

A rectangle is shown. The length of the rectangle is labeled 4 centimeters. The width of the rectangle is labeled 10 centimeters.

What are the dimensions of the poster at one-half its current size?
2 cm by 10 cm
2 cm by 5 cm
8 cm by 20 cm
8 cm by 5 cm