Legal subrogation occur in following ways:
(1) a puisne mortgagee redeeming a prior mortgage.
(2) a co-mortgagor's surety redeeming the mortgage.
(3) mortgagor's surety redeeming.
(4) a purchaser of the equity of redemption redeeming a mortgage.

A. Only (1) and (2) are relevant

B. Only (3) and (4) are relevant

C. Only (2) and (4) are relevant

D. All are legal subrogations and all of (1), (2), (3) And (4) are relevant

Answer: Option D