Two factors which cause global climate change are listed below. Factor 1: Changes in the shape of Earth’s orbit.
Factor 2: Changes in the amount of Sun’s heat received by the Earth’s atmosphere and surface.

Which of these statements is correct about the two factors which cause global climate change?

A. Both are natural factors.
B. Both are human induced factors.
C. Factor 1 is a natural factor and Factor 2 is a human induced factor.
D. Factor 2 is a natural factor and Factor 1 is a human induced factor.