Read the poem below and answer the question that follows.

“fog”
by carl sandburg

the fog comes
on little cat feet.

it sits looking
over harbor and city
on silent haunches
and then moves on.

source: sandberg, carl. “fog.” chicago poems. new york: henry holt and company, 1916. 71. representative poetry online. web. 9 june 2011.

which two things are being compared in the poem?

harbors and cities
fog and cats
cat feet and harbors
fog and moving