Apple Inc and Microsoft Corporation Are Competitors in the Computer Industry

Apple Inc. and Microsoft Corporation are competitors in the computer industry. Following is a table of Total revenue and R&D expenses for both companies.
Which of the following is true?

A) Apple Inc. is the more R&D intensive company of the two.
B) Apple Inc. has become less R&D intensive over the three years.
C) Microsoft Corporation is less R&D intensive in 2016 than in 2015.
D) Microsoft Corporation is more R&D intensive in 2016 than in 2015.
E) None of the above