HOw old is Larry today?

My answer is D.

Question stem states that Sarah was 21 yrs 5 yrs back, i.e. (S-5) = 21 ==> S =26yrs now.

Stmt 1: Larry is twice as old as Sarah is now, L = 2S ==> L = 2*26. So, we can determine how old Larry was 9 years back. This statement is sufficient.

Stmt 2: The information given can be represented by the following equations:
(J-12) = (S-12) + 6
(J-12) = (L-12) - 20

==> (S-12)+6 = (L-12) -20
==> S - 6 = L -34
==> 26 - 6 = L -34 (we know from question that S is 26 yrs now)
==> L = 54yrs.

Hence both statements independently are sufficient to answer the question.

thank you