Which details from the historical fiction piece "marie curie and the discovery of radioactivity" supports marie's factual statement?

during a particularly rigorous winter, it was not unusual for the water to freeze in the basin in the night; to be able to sleep i was obliged to pile all my clothes on the bedcovers. in the same room i prepared my meals with the aid of an alcohol lamp and a few kitchen utensils. these meals were often reduced to bread with a cup of chocolate, eggs or fruit.

(a) no one, the curies included, had ever seen this element. still, the husband-and-wife team had given it a name: radium.

(b) she also met the man who soon became her husband—pierre curie, a brilliant young physicist as promising (and poor) as marie.

(c) a moment later, people passing by the school of physics and chemistry were treated to a sight not often seen on the fashionable streets of paris in the early 1900s: a bareheaded young woman in a laboratory smock, ripping eagerly into the pile of heavy sacks and burying her hands in . . dirt?

(d) in the winter, it was so cold that she emptied her closet, piling the clothes on the bed so she'd be warm enough to sleep.