Comprehension Passage
Direction: Read the following information carefully and answer the questions based on it.
X. 2X² - 13X + 15 = 0
Y. Y² - 45Y + 324 = 0
Z. 9Z2 + 6Z + 1 = 0
An equation is given below: H² - 14H + (15c + 72d) = 0, where one root of the equation is the greater root of X and another root is the smaller root of Y.
Find the maximum value of (c + d), where c and d are both whole numbers.
1
18
2
9
3
4
4
15
5
3