A problem in Mathematics is given to three students P, Q and R whose chances of solving it are \(\frac{1}{2}, \frac{1}{3}, \frac{1}{4}\) respectively. Arrange the following probabilities in decreasing order:
A. The probability that P cannot solve the problem
B. The probability that Q cannot solve the problem
C. The probability that P, Q and R cannot solve the problem
D. The probability that the problem will be solved by at least one student
Choose the correct answer: