:3. A box contains 10,000 flower seeds. Each seed is known to grow either a white flower or a red flower. Four hundred seeds are drawn at random without replacement and are sown. 121 of them are observed to produce white flowers. A 68% confidence interval for the percentage of white flower seeds in the box is best given by

a. between 28% and 32% b. between 20% and 40% c. between 25% and 35% d. between 0% and 75%