Penny had carelessly left marbles on the steps of her house. When Bijou came to visit, she broke her leg by slipping on those marbles and severely damaged her spine. While in the hospital recovering from her fall, her body being weak from all the antibiotics, readily contracted a viral infection. Under these circumstances, Penny is most likely to be liable: a. only for the damage to Bijou resulting from her fall.
b. only for Bijou's viral infection.
c. for injuries sustained by Bijou and also for the viral infection.
d. for neither problems because Bijou should have been careful.