English grammar error-spotting (stative verb ‘‘cost’’ takes simple present): Identify the single erroneous part; remember that ‘‘cost’’ is not normally used in the progressive for permanent facts: ‘‘That house / is costing me / ten thousand rupees / No error.’

Given data

• B: ‘‘is costing me’’

Concept / ApproachStative verbs describing value/possession/mental state (cost, own, believe, know) typically use the simple present for general statements.

Step-by-step correction reasoningChange ‘‘is costing’’ → ‘‘costs’’.

Corrected version‘‘That house costs me ten thousand rupees.’’

Common pitfalls

• Overusing the progressive with stative verbs.

Final Answeris costing me