Liftit Construction routinely uses its crane to move heavy equipment into position. Often, the property belongs to another contractor. After reading the "care, custody and control" portion of the "damage to property" exclusion, Liftit is concerned about damage to property of others while on the crane's hook. Which of the following endorsements to the CGL policy would provide Liftit with coverage for this exposure?

$($Search Chapter $10)$

a$.$ a "crane operators" endorsement

b$.$ a "contractual liability$-$cranes" endorsement

c$.$ a "construction management errors and omissions" endorsement

d$.$ a "riggers liability" endorsement