[Ca2+] within the endoplasmic reticulum (ER) is 10-3M. Cytosolic [Ca2+] is 10-7M. Lysosomes in mammalian cells have an internal pH of 4.0. Cytosolic pH of a typical mammalian cell is 7.0. Which transport reaction has a greater (more positive) Delta Gc, H+ import into lysosomes or Ca2+import into the ER?A. H+ import into the lysosome because it has the steeper concentration gradient. B. Ca2+ import into the ER because it has the steeper concentration gradient. C. H+ import into the lysosome because it is a monovalent cation. D. Ca2+ import into the ER because it is a divalent cation. E. Delta Gc is the same for both ions because their concentration gradients are the same.