hello
from the question given, we know the accumulated points is less than 56 but a multiple of 6.
to solve this questin faster, let's write down multiple of 6 up to 56
multiples of 6 are

from the series above, we can deduce from the options that the score is 42 since it's the only corresponding multiple of 6 less than 56 here.
the answer to this question is option A