The correct answer is: B only
B is a direct subsidiary of JKL.
JKL owns only 40% of A, so it would be presumed to be an associate
JKL has control of B's investment of 30% in C but this is not enough to make C a sub subsidiary. (JKL does not control its associate so the investment held by A does not count here).
C would be treated as a indirect associate of JKL.
