Answer:
A
Explanation:
The market value of equity and debt are used in calculating the weights when determining WACC
Total market value = market value of debt + market value of equity
$10 billion = 7 billion + market value of debt
market value of debt = $3 billion
weight of debt = $3 billion / $10 billion =0.3
weight of equity = $7 billion / $10 billion = 0.7