Which of the following is likely to be TRUE in the event the gene encoding the sarcoplasmic reticulum membrane Ca 2+ ATPase has a missense mutation such that the amino acid that is phosporylated on the cytosolic site is now an alanine?

a) Cytosolic Ca 2+ ions will not bind the Ca 2+ ATPase at the high affinity binding sites
b) Cytosolic Ca 2+ ions will be transported against their concentration gradient
c) Concentrations of Ca 2+ inside the SR will be low
d) All of the above are true