LH C Lounge Suggestions in FRA

[Pure Shores]

Could anybody recommend a LH C lounge in FRA for 1.5hour layover?

I will be traveling from London to Frankfurt and transiting through to the LH flight to SIN (LH778).

I understand that there are three LH C lounges, two in the B piers and one in the A pier. Which would be recommended and close to gates normally used for the LH SIN flight?

Thanks in advance.

[SQflyergirl]

The LH SIN flight will depart from a B pier. The LHR flight can sometimes arrive at both A and B. Not sure how that works though.