Q. The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where $$l$$ = Number of links and j = Number of binary joints)

• (A) n = ($$l$$ - 1) - j
• (B) n = 2($$l$$ - 1) - 2j
• (C) n = 3($$l$$ - 1) - 2j
• (D) n = 4($$l$$ - 1) - 3j