Which star has the highest surface temperature A. blue star
B. yellow star
C. white star
D. red star

The blue star is the hottest star.

Explanation:

Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K

the answer is the

answer; economic order quantity;