Self-cooling clothes may seem (25) ___________the stuff...

Câu hỏi: Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer for each of the blanks from 25 to 29.
Self-cooling clothes may seem (25) ___________the stuff of science fiction, but one Japanese company have created such products by adding fans to shirts and jackets. Shirts and jackets (26) ___________by Kuchou-fuku keep the wearer comfortable even in sweltering heat. And they're also environmentally friendly as they use one-fiftieth of the energy of small air-conditioner units which cool entire rooms. The company has sold bout 5,500 of the garments since they went on sale three years ago, mostly to factory workers. But (27) ___________cool the clothes are, they seem (28) ___________very popular. The fans fill the shirt with air, making the wearer look a bit fat. My daughter won't wear them because the shape is no good, admitted Hiroshi Ichgaya, (29) ___________ works for the company that produces the clothes.
The word or phrase which best fits the gap (29) is...
A. which
B. that
C. whose
D. whose