Which of the following completes the sentence, $\text{'}$In a linkwheel, $\_\_\_\_\_\_$ are considered the "hubs$$ and $\_\_\_\_\_\_$ are considered the $$spokes$\text{'}?$

a$.$

targeted pages; links pages

b$.$

links pages; targeted pages

c$.$

brands; links pages

d$.$

search engines; consumers

e$.$

consumers; brands