See the multi-choice question below:

Sentence 1: With this greater capital intensity, diminishing returns to capital have reduced the return on investment in Japan over the years.

Sentence 2: Diminishing returns to capital has been a factor of reduced investment in Asia.

If the first sentence is true, then is the second sentence true?
OPT:
a). yes.
b). it is not possible to tell.
c). no.
b).