If ( ∑_n=1¹⁰⁰ a₂ₙ₋₁ = 200 ) and ( ∑_n=1¹⁰⁰ a₂ₙ = 100 ), then ( ∑_n=1²⁰⁰ aₙ ) is equal to:
a) 300
b) 225
c) 175
d) 150