The temperatures recorded one day at two cities are shown below:

City L: −8° F

City M: −9° F

Which statement about the temperatures at the two cities is true?

City M was warmer than City L because −9° F < −8° F.
City M was warmer than City L because −9° F > −8° F.
City M was colder than City L because −9° F > −8° F.
City M was colder than City L because −9° F < −8° F.