Nicola was not pleased when Jacopo asked the narrator to drive them to Poleta as he
(a) did not want a stranger to become involved with their plans
(b) preferred going to Poleta by train so that he could enjoy the scenery
(c) did not want to ask anyone for favours
(d) did not want to take help from someone he did not know well
(a) did not want a stranger to become involved with their plans