Joly always stood by her friend Tuly and supported her studies, but when hijackers caught them and forced Joly to give up her gold necklace, Tuly ran off without standing beside Joly. Which aspect of love is revealed in the nature of Joly?

• aselfishness and boastfulness
• bsacrificing, patient and self-giving love
• cjealousy
• darrogance