Directions: Given below are two sentences, l and ll, each containing some highlighted words. After carefully reading both sentences, answer the following questions.

Sentence l - The intricate (A) quantum mechanical principles governing particle behaviour in entangled (B) states require profound (C) deep mathematical comprehension.
Sentence ll - Quantum computing, with its promise of revolutionary (D) capabilities, demands rigorous (E) expertise and novel algorithms to make use of harness (F) its potential.