Rearrange the parts of the sentence in correct order.
P. gangrene, who had recovered from Covid-19 infection and
Q. gallstones resulting in gangrene of gallbladder requiring urgent surgery
R. presented with severe inflammation of gallbladder without
S. we recently successfully treated five patients for gallbladder

A

SPRQ

B

QPRS

C

RQPS

D

PRQS