Imagine you collected bacteria from the sediment in a frozen lake in Minnesota in January and compared the membranes to membranes from bacteria collected from a lake in Texas in June. Consider how the membranes would likely differ. The membranes in bacteria from the Minnesota lake would most likely have which of the following?

a. more saturated lipid tails than membranes in Texas bacteria

b. fewer lipid tails with cis-double bonds than membranes in Texas bacteria

c. more unsaturated lipid tails than membranes in Texas bacteria

d. phospholipids with more negatively charged phosphate groups than membranes in Texas bacteria