Question

What rule applies to this word?
desire
A. If the root is a full word, the ending is usually -able.
B.When the root is a full word except for a final e, the forms usually are spelled with -able.
C.The suffix -able always follows i.
D. When the root has other forms built on the letter a, the -able form is used.
E. When the root ends in hard c or hard g, -able is used.
F. When the root is not a full word,-ible is used.
G. When the word has an immediate -tion form, -ible is used.
H.When the root ends in ns, miss, or soft c or g, ible is used.