A rectangular prism is completely packed with 90 cubes of edge length inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? (5 points)
11 unit cubes and 1 smaller cube of volume cubic inch
22 unit cubes and 4 smaller cubes of volume cubic inch each
11 unit cubes and 2 smaller cubes of volume cubic inch each
22 unit cubes and 2 smaller cubes of volume cubic inch each