(1) This section applies if:
(a) an invalid dies; and
(b) CSC is satisfied that his or her death was due to:
(i) the physical or mental condition that was the basis of the invalid's medical discharge; or
(ii) another physical or mental condition caused by the condition mentioned in subparagraph (i); and
(c) at the time of his or her death, the invalid:
(i) was classified as class B; or
(ii) was reclassified as class C.
(2) Divisions 3 and 4 operate as if, at the time of the invalid's death, he or she were:
(a) classified as class A; and
(b) receiving invalidity pension accordingly.