Frank made a fruit salad. He used 1/4 cup of grapes, 3/4cup of strawberries, and 1/2 cup of melon. Which of the following shows the fractions in order from least to greatest. A: 1/2, 1/4, 3/4. B:1/4, 1/2, 3/4. C: 1/4, 3/4, 1/2. D: 1/2, 3/4, 1/4