An old man, unable to apply a large force,wishes to use a screw jack for lifting his car wheels. If L is the length of the rod used to turn the jack and p is the pitch of jack screw,then he should use a jack in which

A ) L is large and p is large

B ) L is small and p is a large ✅

C ) L is large and p is small

D ) L is small and p is small

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