A flounder plate，on a topping lift，is（）.<br>A:a fairlead block<br>B:a swivel pin for the topping lift block<br>C:a triangular steel plate with a hole at each corner<br>D:the lower block of a multiple part topping lift

A flounder plate，on a topping lift，is（）.
A:a fairlead block
B:a swivel pin for the topping lift block
C:a triangular steel plate with a hole at each corner
D:the lower block of a multiple part topping lift

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